How to choose the right bike tire size


Choosing the Right Tires for Your Bike | MEC

Replacing tires on your bicycle can be intimidating if you’re not sure what to look for. They come in a lot of different sizes and there’s often a pretty big difference in prices, too. To help you choose the right tire for your bike, here’s what to think about:

  • When to replace bike tires: Tips to know when it’s time to swap your tires to prevent punctures.

  • Bike tire sizes: Find out what tire size you need for your bike.

  • Tread patterns: The best tires for bike commuter will be different than for mountain bikers.

  • Are all tires created equal?: Learn what changes the prices of tires to decide if you’d like to have those features.

Shop all bike tires

When to replace bike tires

Knowing when to replace a tire is a great way to avoid being stranded on the side of the road or having to walk back to the trailhead.

What to look for

  • Minor cuts in the tire aren’t too problematic. But if you see any cuts that are deep enough to show the casing, cause bulges, or allow to you see the inner tube, it’s time to replace the tire.

  • If you’ve worn the rubber down to a point where you see any of the tire casing, you’re lucky to have made it this far! Get some brand new rubber.

  • Tires that look dry and cracked mean the rubber has lost its elasticity and is a problem waiting to happen.

Some road bike tire brands have wear indicators that show when your tires are past their prime. If there are no wear indicators on the tire, you can look at the tread, head on. If the tire looks squared off in the centre of the tread – instead of making a nice round shape – that tells you that a significant amount of tread has worn off.

On mountain bike tires, take a look at the centre lugs. Worn-down lugs are rounded and much smaller compared to a new set of tires. The lugs directly affect the tire’s ability to stop and accelerate effectively.

What’s the right tire size for my bike?

Most modern bikes will be equipped with one of four wheel sizes, and you’ll need to know what size your wheels are so you can get tires that fit. Look at the side of the tires currently on your bike to find out the size.

Look at the side of your current tires to see what size you need.

1. The first number is the tire diameter. The most common options are 26in., 27.5in. and 29in. for mountain bikes, and 700 for road bikes. Start your search for a new tire with this number. Buying a tire with the incorrect diameter will make it impossible to install it on your wheel.

2. The second number is the width of the tire. This number is expressed in inches for mountain bike tires and in millimeters for road tires. Learn more about the best tire widths for your bike below.

What is the best bike tire width?

Each tire on mec. ca shows the tire width measurement under “tire size” in the tech specs. The width is the second number (e.g., 27.5 x 2.80 means a 2.8in. tire width; 700 x 32 means a 32mm width).

You have a little bit of room to play with width. While you don’t want to buy a tire that is wildly wider or narrower than the one your bike came equipped with, there’s usually a little bit of wiggle room in either direction.

Wider tiresNarrower tires
ProsMore comfort and gripResist pinch flats better because of high volume inside the tireLower rolling resistanceLighter and more aerodynamic
ConsHigher rolling resistance and heavier, which slows you downLess comfortableNot as grippy, since you need to have them at a higher pressure to prevent pinch flats

The tire width that’s right for you depends on the type of bike you’re riding:

Road biking tire widths

The width that seems to have won the heart of most road riders is 25mm; it offers a good balance of comfort, grip and speed. 28mm tires are also becoming more common, as they give you more comfort on rougher roads with minimal drawbacks.

Not long ago, 23mm tires were all the rage but riders who’ve switched to wider tires haven’t looked back. Whatever width you choose, make sure that your bike has enough clearance to fit the tire so it doesn’t rub on the frame.

Shop road cycling tires

Bike commuting tire widths

Bike commuters will benefit from a mix of comfort and performance to handle the road and changing conditions. Look for tires with widths from 32–42mm.

Shop bike commuter tires

Mountain bike tire widths

Mountain bike tires have a large range of widths. Cross-country riders generally use narrower tires, while downhill mountain bikers tend to go for wider ones.

  • XC riders often opt for tire widths between 2in. and 2.35in.

  • Trail, all-mountain and enduro bikes benefit from added volume to increase traction and comfort. A good place to start is in the 2. 25–2.4in. range.

  • Plus-sizes bikes offer more clearance to accommodate tires in the 2.6–3.0in. range. These provide amazing traction and comfort in all trail conditions.

Shop mountain biking tires

Gravel riding tire widths

If you’re looking for the perfect tire width for your adventures on unpaved and gravel roads, 36–48mm is where it’s at. You’ll get a much smoother ride and increased traction when cornering on unpaved roads. Check your frame clearance to ensure it’s compatible with the tires you’re eyeing.

What tread pattern is best for my riding?

Different tread can give you more grip and traction, smoother and faster rides, or a mix of both.

Road bike tire treads

Slick tires mean less rolling resistance (which usually means faster). They sometimes have small channels along the edges for water to escape from under the tire and improve traction when cornering.

Commuter bike tire treads

These vary from slick to semi-slick. A semi-slick tire has a smooth middle part with small lugs along the edges to give some traction when you take shortcuts on unpaved roads. If you commuter in winter, you may want to consider tires with studs – they’re great for extra grip on ice.

Mountain bike tire treads

The amount, size and position of treads varies a ton depending on the riding you do:

  • Cross-country riders on rolling, firmly packed trails with little roots and rocks can get away with smaller, tightly spaced treads. These have the lowest rolling resistance and still allow you to move effectively on the trails.

  • Trail, all-mountain and enduro riders need tires to roll efficiently and still give traction when the trails gets rowdy. The centre of the tread generally features ramped lugs that are close to each other, while the edges have large lugs that come into play when cornering at speed. It’s also common to see enduro racers with different front and back tire. The most aggressive and grippy tire is mounted on the front wheel, while the rear tire is focused on lower rolling resistance.

  • Downhill riders need tires to optimize traction. In muddy conditions, tires with big, tall lugs that have spacing between them helps shed the accumulated grit.

Expensive vs. affordable tires: what do you get?

At first glance, the difference between two tires may not be all that obvious. But once you know what to look for, you’ll see where those extra dollars go.

Bike tires are made of more than just the rubber tread. They also have a fabric-like carcass layer, a bead, and can also have a puncture protection layer or even studs for winter riding.

Wire vs. folding tire beads

When talking about tire beads, you’ll hear “wire bead” and “folding bead”. A wire bead is made of steel and can’t be folded on itself without damaging the tire. These tires need to be stored completely open, are heavier than tires with a folding bead, and are usually the cheaper option.

In most tires with a folding bead, Kevlar is used in place of steel. Kevlar is extremely resistant to stretching while remaining flexible. Folding tires are much easier to transport as they can be folded on themselves and are also lighter than a wire-bead equipped tire; they’re usually the more expensive option.

Shop wire bead tiresShop folding tires

Tire carcass and TPI (thread per inch)

Under the top rubber layer is the carcass, which looks a lot like a piece of fabric. The TPI count of a tire carcass influences how pliable and supple it is. Higher-end tires will have a high TPI count, which creates a smoother ride, increase traction and roll faster. A lower TPI count results in a tire that isn’t as smooth and fast, but usually comes at a lower price and can be more durable.

Not all rubber is created equal

Every manufacturer has their own secret rubber recipe to create the right balance of grip, rolling resistance and wear resistance for their intended use. Some tires even use multiple compounds in a single tire, so it can have a firm rubber in the centre and softer, grippier rubber along the edges.

Tubeless-ready tires

Tubeless-ready tires are designed to be used without a tube, which means the tire needs to hold air without blowing off the wheel. Tubeless-ready tires, especially for road bikes, require a bead that’s designed to stay in place without any stretching. This special bead is generally made of carbon fibre to ensure it stays perfectly put, which makes these more expensive.

To learn more, check out our article on tubes vs. tubeless for mountain biking.

Shop tubeless-ready tires

Puncture protection

Bike commuters know how frustrating it is to get a puncture on the way to work. A layer of material designed to prevent punctures makes a difference during wet commutes where road grime gets on the shoulder. While tires with extra puncture protection helps, it’s always a good idea to know how to fix a flat tire too.

Shop all bike tires

Related articles

  • How to fix a flat bike tire

  • Getting ready for winter riding

  • Mountain bike wheel sizes: 27.5in. vs. 29in.

How To Choose Bike Tires [Size + Width] The Bike Shoppe

How to Choose Bike Tires

Use this guide to find the right bike tire size


and width for your bike and riding style

There are so many options out there, so how do you choose the right tires for your bike? We’ve got you covered with this helpful article on finding the best bike tires that will cover all the main questions we get, so read on to get started.

When To Replace Bike Tires Bike Tire Sizes 27.5 Inch vs 650b Tires Bike Tire Widths Shop Bike Tires Bike Tire Size FAQs

How to tell if you need to replace your bike tires

Here's some quick tips on when you start looking for replacement tires. Knowing you have a busted tire is one thing. Preventing flats before they happen in another. If you can identify these warning signs then you can replace a worn out tire before it ruins your next ride.

Here are some signs that will tell you a tire is ready to be replaced:

  • Worn-down tread, especially in the center
  • Knobs ripping off the sidewall
  • Cracking rubber
  • Cuts in the sidewall
  • Continual flats even with new tubes
  • Uncommonly poor handling

How to choose the right bike tire size

Here are the main factors you need to consider when shopping for new bike tires. First it’s about knowing what will fit, then you can refine your search to pick out the models that will give you the performance you’re after.

Bike tire sizes (diameter)

Before you start shopping, you need to know what tire size will fit your wheel diameter. Get the wrong size tire for your wheels and you won’t be going anywhere. Here are the common tire sizes:

Mountain bike tires

  • 29 inch: Super fast with lots of rollover power and downhill control. Perfect for the majority of trail riders.
     
  • 27.5 inch: Agile and playful. Great for tight turns, creative lines, and getting air. Gives smaller riders the best performance. Sometimes referred to as 650b.
     
  • 26 inch: Less common these days, mostly found on older mountain bikes but also found on fat tire bikes.

Road bike / gravel bike / commuter bike tires

  • 700c: The most common size tire for road, gravel, and commuting. Great for the majority of riders. Tons of options.
     
  • 650b: A wider tire that’s more capable off-road. Great for gravel and anyone looking for more traction and comfort. Sometimes referred to as 27.5 inch.

What’s the difference between 27.5 inch and 650b tires?

27.5 inch and 650b tires technically refer to the same size as both fit on the same diameter wheel, but 27.5 inch is more often used for mountain bikes and 650b is more often used for road and gravel bikes.

The term 27.5 inch is mostly used in the mountain biking world in order to designate it as the size between 29 inch and 26 inch. Tires designated as 27.5 inch are often (but not always) mountain bike-focused with more tread for off-road riding.

650b is more commonly used in the road/gravel/adventure worlds. They typically have less tread than mountain bike tires, which keeps them fast-rolling on a variety of surfaces, but they offer more traction and comfort than standard 700c road tires.

Common bike tire widths

Once you know the size tire you need for your wheels, the next step is to choose the right tire width. Obviously a road rider will be looking for a skinnier tire than a mountain biker, but even small differences in width can make a big difference when it comes to how your bike performs.

Here are the most common bike tire widths:

Mountain bike tire widths (measured in inches)

  • 2.1 - 2.3” : great for XC riding and flowy singletrack
     
  • 2. 4 - 2.6” : trail tires, better grip on loose, technical terrain
     
  • 2.8 - 3.0” : also called “plus tires”, great for serious traction and increased comfort
     
  • 3.5 - 5.0” : fat bike tires for maximum float and traction

Gravel bike tire widths (measured in mm/inches)

  • 38 - 45mm : speed-oriented, great for racing and fast-paced riding
     
  • 47 - 50mm and up: adventure-focused, great traction and comfort for bikepacking and wild rides
  • 1.9 - 2.3” : sometimes you’ll see gravel/adventure tires measured in inches as well, use a measurement converter if you need!

Road bike tire widths (measured in mm)

  • 23 - 28mm : race tires, super fast on tarmac
     
  • 30 - 35mm : endurance tires, still fast but more traction/comfort for long rides on varying surfaces

Commuter bike tire widths (usually measured in mm)

  • 35 - 38mm : fast-paced, efficient commuting on mostly paved surfaces
     
  • 40 - 45mm and up: wider and more comfortable, provides more traction on loose surfaces for the long way home

Other factors to consider when shopping for tires

Rim Width

Just knowing the wheel diameter (29/27. 5/etc) isn’t always enough. If you’re thinking of buying a new tire that’s narrower or wider than the one you’re replacing, you’ll also want to make sure the tire you’re shopping for is the right width for the rim.

If you know what rims you have, you can look up its internal width and check the tire manufacturer’s rim width compatibility. This can be a little confusing, and lots of riders don’t know exactly what rims they have. We’re happy to make sure you get the right tire for your wheels, so stop by or give us a call if you want some help!

Max tire clearance (frame clearance)

Another factor to consider when considering a tire that’s wider or narrower than the one you’re replacing is frame clearance. Because bikes are designed with specific purposes in mind, their frames and forks have limits on what tires will fit and what won’t.

You can usually look up the max tire clearance of your frame on the bike manufacturer’s site, but again, if you’d like the help of professionals you can stop by or give us a call!

Bike tire size FAQs

Tubes vs tubeless bike tires, which is better?

Tubeless bike tires can be used with tubeless compatible rims without inner tubes. Without tubes, you can run lower tire pressures without getting pinch flats (caused by the tube being squished). Lower pressure also offers more comfort and traction off road, so many mountain bikers and gravel riders choose to go tubeless. Tubeless conversion requires tubeless compatible tires and rims, tubeless rim tape, and almost always an air compressor. Because tubeless can be a pain to set up, most commuters and casual riders won’t bother.

How much air should I put in my bike tires?

Every tire has a recommended PSI range on the sidewall, and it’s best to stay within those limits so you don’t get flats or blowouts. You can adjust the air pressure within that range to suit your preference.

What bike tube valves do I need?

If your tube’s valve looks like what’s on your car, you need a Schrader valve. If it's a long and skinny valve with a twistable top, you need a Presta valve.

What is a good TPI for bike tires? What does TPI stand for?

Threads Per Inch. A higher TPI (120) is lighter and more performance oriented for riders who want speed benefits. A 60tpi tire is more durable but slightly heavier.

How much tread do I need for bike tires?

Thinner tires with less tread are faster on smooth surfaces, and wider tires with more tread are better from loose, challenging roads and trails.

Are there bike tires with puncture protection?

Yes, some tires come with reinforced material in the rubber casing that can help prevent punctures. Check the tire’s description to know for sure.

90,000 how to choose a bike cover

Table of Table of Contents

Tires

Types of tires


Change tires, if:

Tables

Types Size

Types of tires

9000
  • rubbed the tutor (it is difficult to determine the slick tires).
  • The handling of the bike has become noticeably worse.
  • Sidewall or tread severely cut or torn.
  • Rubber starts to crack or peel.
  • The tire is deformed due to damage to the carcass under the outer wall.
  • Small cuts visible, which may or may contain broken glass - these may penetrate the tire and form flat areas.

Important! Some tires have wear indicators - one or two small dimples. When they disappear, tires need to be replaced

Bicycle tires and tubes

Final price

5,799 ₽

Schwalbe | Tire Schwalbe Durano 700 x 28C

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Final price Maxxis | Tire Maxxis Ardent, 27.5 x 2.4, 61-584, 60 TPI, Mountain

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Schwalbe | Tire Schwalbe Durano 700 x 23C

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4 999 ₽

Schwalbe | Tire Schwalbe Durano 700C x 25

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-20%

Final price Maxxis | Tire Maxxis CrossMark II, 27. 5 x 2.25, 57-584, 60 TPI, Mountain

Buy

-20%

Final price Schwalbe | Schwalbe Marathon 26 x 2.0 Tire

Buy

Final price

3 599 ₽

Schwalbe | Tire Schwalbe Land Cruiser Plus 26 x 2.0

Buy

-15%

Final price Maxxis | Tire Maxxis Pace, 27.5 x 2.1, 53-584, 60 TPI, Mountain

Buy

-10%

Final price Schwalbe | Tire Schwalbe Land Cruiser Plus 27.5 x 2.0

Buy

-10%

Final price

3 329 ₽

3 699 ₽

Maxxis | Tire Maxxis Ardent, 27.5 x 2.4, 61-584, 60 TPI, Mountain

Buy

-20%

Final price Maxxis | Tire Maxxis Ikon, 27.5 x 2.2, 56-584, 60 TPI, Mountain

Buy

-15%

Final price Maxxis | Tire Maxxis Overdrive Excel, 26 x 2. 0, 50-559, 60 TPI

Buy

Before choosing a tire, the first step is to determine its size (by wheel diameter and width). It depends on what rims your bike has.

Check the sidewall of the tire - there are numbers indicating its size (for example, as in the picture, the outer diameter is 27.5'' and the tire width is 2.2'')

But the types of markings are different:

The diameter according to the universal system for measuring tires (ISO 5775 or ETRTO ) indicates the inner diameter (in millimeters, mm) and the width of the tire (also in millimeters, mm).

Consists of two numbers, for example, 57–559

English and French manufacturers may indicate a different marking: outer diameter for tire width (in inches, ''). Sometimes tire height is added (decimal, inches, '').

Diameter and width: two numbers or a decimal, e.g. 28 x 1.4, 28 x 1 1/8. View diameter, height and width: 28 x 1 5/8 x 1 3/8

where A is the largest).

For example, 700 x 35C

Important! You can also find out the tire size:

  • On the manufacturer's website - by bike model.
  • In the instructions for the bike.
  • At Sportmaster PRO Service Centers in your city

A few tire recommendations:

  • Most road bikes will fit tires with a diameter of 700 mm (28'') for men and 650 for women (26'').
  • for racing bikes it is better to fit tires with a diameter of 26 29'' and a width of 0. 7 –0.9'' (18–23 mm).
  • The long-distance bike is suitable for tires with a width of 0.9-1.1'' (25-28 mm): it will be easier to ride on dirt or wet roads.
  • Wheels for mountain bikes are available in several diameters: 1-1.2'' (26, 27.5 and 29 mm).
  • XC it is better to wear tires 2–2.4'' (45–60 mm).
  • For the Freeride or Downhill , choose tires that are 2.5-3.0'' (65-75mm) wide for reliable grip on rocks.
  • motocross bikes (BMX) fit 20'' (51mm) tires.

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Trek | Mountain bike Trek Marlin 4 29", 2022

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Slick

Designed for asphalt and racing tracks.

The tread is either missing or has shallow drainage grooves

Slicks do not create wheel vibration, so the bike can reach high speeds on a flat, smooth surface. But when braking and on wet roads, care should be taken, and it is not recommended to go off-road, as this is fraught with loss of control and breakdown of the wheel.

Semi Slick

Provides reliable grip on sand, suitable for cross-country dirt roads, light off-road and asphalt. Fast and silent running.

In the center, the tire is covered with a tread with drainage grooves, the sides are equipped with small lugs to help when cornering

Usually this type of tire comes with a new bike.

Mud/gravel

Ideal for mountain bikes.

Aggressive tread provides reliable grip on gravel, sand and snow

Due to the relatively large weight and deep tread, tires create additional resistance, so driving on asphalt is not a good idea.

Crossover/Urban

The rubber of this type of tire is very durable due to reinforced carbon fiber beads.

In the middle of the tire there is a tread of high lugs, so these wheels are suitable for traveling on asphalt and dry dirt.

Bicycle tires and tubes

Final price

5 799 ₽

Schwalbe | Tire Schwalbe Durano 700 x 28C

Buy

-10%

Final price Maxxis | Tire Maxxis Ardent, 27. 5 x 2.4, 61-584, 60 TPI, Mountain

Buy

Final price

4 999 ₽

Schwalbe | Tire Schwalbe Durano 700 x 23C

Buy

Final price

4 999 ₽

Schwalbe | Tire Schwalbe Durano 700C x 25

Buy

-20%

Final price Maxxis | Tire Maxxis CrossMark II, 27.5 x 2.25, 57-584, 60 TPI, Mountain

Buy

-20%

Final price Schwalbe | Schwalbe Marathon 26 x 2.0 Tire

Buy

Final price

3 599 ₽

Schwalbe | Tire Schwalbe Land Cruiser Plus 26 x 2.0

Buy

-15%

Final price Maxxis | Tire Maxxis Pace, 27.5 x 2.1, 53-584, 60 TPI, Mountain

Buy

-10%

Final price Schwalbe | Tire Schwalbe Land Cruiser Plus 27. 5 x 2.0

Buy

-10%

Final price

3 329 ₽

3 699 ₽

Maxxis | Tire Maxxis Ardent, 27.5 x 2.4, 61-584, 60 TPI, Mountain

Buy

-20%

Final price Maxxis | Tire Maxxis Ikon, 27.5 x 2.2, 56-584, 60 TPI, Mountain

Buy

-15%

Final price Maxxis | Tire Maxxis Overdrive Excel, 26 x 2.0, 50-559, 60 TPI

Buy now

According to the way the tires are installed:

Clincher

Standard tires with beads that fix them on the wheel rim. Installing and changing these tires is quite simple. Their weak point is the camera, which is easy to pierce while riding.

Tubeless (folding)

The function of the camera is performed by a safety cable made of Kevlar threads. Tires are mounted on special rims with high sides and additionally sealed with an anaerobic adhesive-sealant. The absence of a chamber somewhat reduces the weight of the bike, and a punctured tire can be repaired right on the wheel.

Tube

Impenetrable version with increased cord density (up to 320 TPI). Very light, so it is used on sports bikes. The cord does an excellent job with the tasks of the camera. Such a tube is attached to the wheel rim with glue.

The off-road summer tire has a tread depth of 6-8 mm and several layers of extended rubber, making it puncture resistant.

Winter tires are made of soft compound, some are equipped with studs. Winter tire tread depth - 9-11 mm, which provides confident grip on a snowy track and allows you to brake even on icy sections of the road.

EXPERT TIP

Winter tires are recommended to be used at temperatures up to +5 degrees, otherwise soft spikes will quickly wear off on asphalt


In our online store you will find tires for road, racing, mountain and other categories of bicycles. To replace them, contact the Sportmaster service centers.

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What types of markings and interchangeability of bicycle tires. How to choose the size of a bicycle tire. What types of markings and interchangeability of bicycle tires. https://www.sportek.in.ua

Nikolaev bicycle shop "Sportek"

Published: 01/27/2017

Edited: 06/01/2021

Sooner or later, almost every cyclist faces the question of replacing the rubber on the wheel or the cameras for them.

The easiest way, of course, is to look at the size of the tire currently installed on the bike (it is written on the side of it), and look for exactly the same. On some rims, their landing diameter and width are also written.

In life, everything is always a little more complicated and it often happens that the tire you like has a marking that is not entirely clear or does not match the marking on your rubber. Sometimes it is necessary to replace the old bicycle rubber, which has served for many years, with a more modern one.

What to do? You can’t put a tire on a bike over the Internet, but you don’t want to pay money just like that.

In this article, we will try to help you understand the markings on bicycle tires and find out which of them are interchangeable.

The article will address the following issues:

  • bicycle wheel sizes;
  • types of bicycle tire markings;
  • interchangeability of bicycle tires in terms of fit diameter and width.
  • selection of tire width from rim width

Wheel dimensions or more precisely rim dimensions

The first thing you need to know when choosing a tire is the size of the wheels. They are usually measured in inches, but sometimes in mm. There are not very many of them and the most common ones are 16, 18, 20, 24, 26, 27.5, 28, 29.

  • 20, 24 - for teenagers
  • 26 - for mountain and downhill bikes
  • 26 and up for adult models.
  • Further, what else you need to know is seat size (diameter) of the rim or BSD (English Bead Seat Diameter). It is the most important and determines the interchangeability of tires. If this number matches at the rim, tire, or tube, then that tire or tube fits those rims. And if the width of the new rubber can be changed, then the landing size will not change much.

    If the size (numbers in mm) is written on the wheel (rim), for example, as in the photos above, they accurately indicate the fit size of the rim and its width, which is the main data for selecting the inner tube and tire for the wheel.

    Bicycle tire marking

    There are several types. The confusion in the designation of sizes began in the middle of the 20th century, and today Great Britain and France use their own designations for marking.

    Previously, the sizing system was based on the outside diameter of the tires. It was measured in inches (24", 26", 28") or in millimeters (500, 650, 700, etc.).

    Over time, this system lost its meaning, because different products with the same outer diameter wheels (together with the height of the tire) did not match the inner diameter (rim diameter) on which this tire was put on. There were also marketing moves of manufacturers, and the accuracy of translation and rounding of measurements in inches is lower than in millimeters.0003

    To overcome these confusions and bring all sizes to the same standard, the International Organization for Standardization (ISO - International Organization for Standardization) has developed a universal system for designating tire sizes - ISO 5775 . This system was previously known as " ETRTO ". It was proposed by the organization of the same name: ETRTO (European Tire and Rim Technical Organization or in Russian: "European technical organization for rims and tires").

    Bicycle tire markings:

    1. Marking according to ISO specifications (ETRTO). The most accurate, understandable and convenient. Describes in millimeters all the necessary dimensions. For example, 28-622, where 28 mm is its width and 622 mm is inner (landing) diameter .
    2. Fractional marking in inches, type 28x1 1/8. Where: 28 is the outside diameter in inches of and 1 1/8 is its width in inches (one whole and one eighth of an inch).
    3. Marking in inches in decimal fraction. For example: 26x1.75. Similarly: 26 - is the outer diameter of in inches, and 1.75 is the width. What is the difference between simple and decimal fractions in these notations, and what problems does this bring, we will talk a little lower.
    4. Dimensioning as multiple numbers in inches: 28 x 1 5/8 x 1 3/8. Where: 28 - is the outer diameter of in inches, 1 5/8 is the height of the bike tire in inches (one whole and five eighths of an inch), 1 3/8 is its width in inches (one whole and three eighths of an inch).
    5. French mark. In our country, it is less common, however, on wheels made in Europe or for Europe, it is often applied.

      At first it was in the form of a number and a letter, for example, 700C - 700 the outer diameter of the tire is in mm. The letter determined the width from "A" - the narrowest to "D" - the widest.

      Now the marking has acquired a more modern look. For example: 700 x 35C. Here the outer diameter of the tire is 700 mm and its width is 35 mm. The letter at the end indicates the inner (landing) diameter. In this case, "C" is 622 mm.

    6. On the old Soviet bicycle tires, the marking was also in millimeters, but it looked like 533x37. Those. first inner diameter tire (rim size ) - 533 mm, and then its width - 37 mm. (instruction for Soviet bicycles: "SPORT", "Salyut")

    The problem of indicating the size of tires in inches as a fraction and decimal

    Note a very important nuance and paradox in the sizes indicated in inches. Tire sizes can be specified as a decimal fraction, such as 26x1.75, or as a simple fraction, such as 26x1 3/4.

    Mathematically, these fractions are equal: 1.75 = 1 3/4.

    But, in terms of fit size and tire width in millimeters, this is not always the case, and the most unpleasant thing is that tires with such dimensions can be not interchangeable with .

    And this circumstance should always be taken into account when purchasing a new bike tire.

    Table of interchangeability (compatibility) and ratio of tire sizes in different marking systems

    In the table below, we have tried to collect the most common tire size designations in different systems and show their compatibility.

    Perhaps not all dimensions encountered in life were taken into account, but if you have a tire with dimensions not listed in the table, try to estimate its dimensions based on similar nearest or similar dimensions.

    Rim bore size
    in mm according to ISO
    Tire size
    in plain and decimal inches
    French tire size Tire size
    in mm according to ISO
    (width - bore)
    Explanations
    681 22-681 Sports track bike B-64 "Record" KhVZ (1958)
    642 28 x 1 5/8 x 1 1/2 700-28A 28-642 Obsolete size
    28 x 1 3/8 700-35A 37-642
    635 28 x 1 1/2 x 1 1/8 700-28B 32-635 American, English, Danish, Chinese, Indian Road Models
    28 x 1 1/2,
    28 x 1 1/2 x 1 5/8
    700-38B,
    700B Standard
    40-635
    28 x 1 5/8 x 1 1/2 44-635
    630 27 x 7/8 22-630 Road bikes, including older models
    27 x 1 25-630
    27 x 1 1/8 28-630
    27 x 1 1/4 32-630
    27 x 1 3/8 37-630
    27 x all options
    622 29 x all variants 700C This size was invented by marketers for tires with a bore diameter of 622 mm. They differ from 28 only in tire height.
    28 x decimal 700C For 622 mm tires
    28 x 3/4 700-18C
    700x18C
    18-622
    700-19C
    700x19C
    19-622
    28 x 3/4 700-20C
    700x20C
    20-622
    28 x 1
    28 x 7/8
    700-23C
    700x23C
    23-622
    28 x 1 700-25C
    700x25C
    25-622
    28 x 1 1/8,
    28 x 1 5/8 x 1 1/8
    700-28C
    700x28C
    28-622
    28 x 1.20 700-30C
    700x30C
    30-622
    28 x 1 3/4,
    28 x 1.5
    700x38C
    700-40C
    40-622 Road bikes: "Ukraine", "Minsk", "Sura", "Velta", "Aist" (111-321, 111-322)
    28 x 1 1/2,
    28 x 1 5/8 x 1 3/8
    700C
    700x35C
    700x38C

    35-622
    37-622

    Road bikes: "Ukraine", "Minsk", "Sura", "Velta", "Aist"
    27 x 1 1/4,
    28 x 1 5/8 x 1 1/4
    700-32C
    700x32C
    32-622 Road and sports touring bikes, "Tourist", "Sport", "Sputnik"
    28 x 1 5/8 x 1 1/4 Obsolete Canadian designation F13
    28 x 1. 4 700-35C
    700x35C
    35-622 Road bikes
    28 x 1.5 700x38C
    700-38C
    700-40C
    700x40C
    40-622
    28 x 1 3/8 x 1 5/8 37-622
    28 x 1.6 700-42C
    700x42C
    42-622
    28 x 1.6 700-44C
    700x44C
    44-622
    28 x 1 5/8 x 1 3/4 700-45C
    700x46C
    45-622
    28 x 1.75,
    28 x 1 5/8 x 1 3/4
    700-47C
    700x47C
    47-622
    28 x 2.00 700-50C
    700x50C
    50-622
    600 22 (23, 24, 25, 27, 28, 30)-600 Old Soviet sports and track bikes
    599 26 x 1.25,
    26 x 1.375
    32-599 Very old American light bicycles.
    26 x 1 7/8 47-599 ZiF (Penza) 190-535 "Samson"
    597 26 x 1 1/4 (EA1) (England) 32-597 English old sports and club bikes.
    26 x 1 3/8 (S-6) 37-597 Light bicycles of the American company Schwinn.
    590 26 x 1 1/8 28-590

    Soviet bicycles ZiF (Penza)

    "Diana", "Prima", "Turn", "Relay", "Sura", "Breeze", "Temp"

    American and British 3 and 10 speed.

    26 x 1 1/4 32-590
    26 x 1 3/8 (E.A.3) (England) 650A 35-590
    26 x 1 3/8 650-35A
    650x35A
    37-590
    26 x 1 5/8 44-590
    587 700D Old size on some GT models
    584 27. 5 x 1.50 650х38B 40-584 French road bikes, touring bikes with cargo, tandems, some Raleigh (USA), old Schwinn mountain bikes
    26 x 1 1/2 650B 37-584
    27.5 x 1.5 40-584
    27.5 x 1.65 44-584
    27.5 x 1.75 47-584
    27.5 x 2 52-584
    27.5 x 2.1 54-584
    27.5 x 2.25 57-584
    27.5 x 2.3 60-584
    27.5 x 2.4 62-584
    27.5 x 2.8 70-584
    571 26 x 3/4 650x20C 20-571 Triathlon, time trial, small road bikes, some French Peugeot bikes.
    26 x 7/8 650x23C 23-571
    26 x 1 650C 23-571
    26 x 1. 75 47-571
    26x1 3/4 (S-7) Road Schwinn
    559 26 x 1.0 25-559 Most mountain bikes. Classic landing diameter for 26 wheels.
    26 x 1.25 32-559
    26 x 1.35 35-559
    26 x 1.4 37-559
    26 x 1.5 40-559
    26 x 1.6 44-559
    26 x 1.75
    26 x 1.75 x 2
    47-559
    26 x 1.95 50-559
    26 x 2.00 52-559
    26 x 2.10 54-559
    26 x 2.15 55-559
    26 x 2. 25 57-559
    26 x 2.3 60-559
    26 x 2.4 62-559
    26 x 3.0 75-559
    26 x 3.7 95-559
    26 x 4.00 100-559
    26 x 4.5 115-559
    26 x 4.8 120-559
    547 24x1 1/4 English children's and American firm Schwinn
    24x1 3/8 (S-5) Schwinn American children's bicycles
    540 24 x 1 1/8 600A 28-540 Children's English and European bicycles, most wheelchairs
    24 x 1 1/4 32-540
    24 x 1 3/8(E-5),
    24 x 1 3/8 A
    37-540
    533 24 x 1 1/2 37-533

    "Salute", "Altair", "Ervi", "Eaglet", "Erelyukas", "Swallow" ("Kregzdute", "Kregzhdute" - Siauliai bicycle factory "Vairas" Lithuania).
    This is the Soviet standard and tires with a diameter of 533 mm are available only with a width of 37 mm.

    Be careful when replacing because not all 24 inch tires will fit 533 wheels.

    531 24 x 1 5/8 x 1 1/2 44-531
    520 24x1 25-520 Road wheels for children's bikes
    507 24 x 1.5 40-507 Children's mountain. "Salut", "Altair", "Ervi"
    24 x 1.75 47-507
    24 x 1.95 50-507
    24 x 2.0 51-507
    24 x 2.125 54-507
    24 x 2.25 57-507
    24 x 2.35 60-507
    24 x 2. 5 62-507
    24 x 2.6 65-507
    24 x 2.75 70-507
    24 x 3.0 75-507
    501 22 x 1.0 25-501 European bicycles
    22 x 1 1/4 32-501
    22 x 1 3/8 37-501
    490 550-28A 28-490 European Road Kids Bikes
    22 x 1 3/8 x 1 1/4 550-32A 32-490
    22 x 1 3/8 550-35A 37-490
    489 22 x 1.0 25-489 European bikes
    22 x 1 3/8 37-489
    22 x 1 3/8 x 1 1/4 40-489
    22 x 2. 00 50-489
    457 22 x 1.75 to 2.125 Children's bicycles
    451 20 x 1 1/8 28-451 BMX for light riders, light children's bikes, some ligerades.
    Wheels on some types of wheelchairs.
    20 x 1 1/4 30-451
    20 x 1 3/8 37-451
    445 20 x 1 1/4 30-445 "Schoolboy" (old Soviet models)
    440 500-28A 28-440 European folding, children's bikes
    500-35A 37-440
    20 x 1 1/2 500-38A 40-440
    438 20 x 1 3/8 37-438 European bikes
    20 x 1 3/8 1 1/2 40-438
    432 20 x 2 1/2 40-432 European bikes
    428 20 x 2. 00 54-428 European bikes
    419 20 x 1 3/4 Schwinn American children's bicycles
    406 20 x 1.25 32-406

    Most BMX bikes, kids and folding models.

    "Venta" (folding model 175-811).

    "Stork" (folding, model 113-322)

    "Tisa-2", "Cross", "KAMA", "DESNA", "Schoolnik", "Velta Kama", "Dubisa" (Siauliai bicycle factory), "Eureka" and other folding and old Soviet models.

    Folding "Mustang"

    20 x 1.35 35-406
    20 x 1 3/4
    20 x 1.5
    40-406
    20 x 1.75,
    20 x 1.75 x 2
    47-406
    20 x 1.95 50-406
    20 x 2.00 54-406
    20 x 2. 125 57-406
    20 x 2.35 60-406
    20 x 2.5 62-406
    20 x 2.6 65-406
    20 x 2.75 70-406
    20 x 3.0 75-406
    390 18 x 1 1/8 450-28A 28-390 Children's European bicycles
    18 x 1 3/8 450-35A 37-390
    450-55A 55-390
    387 18 x 1 1/2 37-387 Children's European bikes
    369 17 x 1 1/4 32-369 Bicycles Alex Moulton
    355 18 x 1 1/8 28-355 Children's bicycles
    18 x 1. 25 32-355
    18 x 1.35 35-355
    18 x 1.5 40-355 Birdy folding bikes.
    18 x 1.6 42-355 Children's bicycles
    18 x 1.75 47-355
    18 x 1.95 50-355
    18 x 2.0 54-355
    18 x 2.125 57-355
    349 16 x 1 1/8 28-349 Old Moulton, Brompton and other folding bicycles, ligerade front wheels, children's bicycles.
    16 x 1 1/4
    16 x 1.25
    32-349
    16 x 1.35 35-349
    16 x 1 3/8 37-349
    340 400-30A 28-340 Children's European bikes
    16 x 1 3/8 x 1 1/4 400-32A 32-340
    16 x 1 3/8 400-35A 37-340
    16 x 1 5/8 400A 44-340
    335 16 x 1 3/8 Children's Polish bicycles
    330 16 x 1 1/2 400-38B 40-330 Children's bicycles
    317 16 x 1 3/4 Schwinn American children's bicycles
    305 16 x 1. 5 40-305 Children's bicycles, folding, touring and some ligerades.
    16 x 1.75 47-305
    16 x 1.95 50-305
    16 x 2.0 54-305
    16 x 2.125 57-305
    16 x 2.5 62-305
    298 14 x 1 1/4 350-32A 32-298 Carriages, children's bicycles, balance bikes
    288 14 x 1 3/8 350A,
    350-35A
    37-288 Children's bicycles, balance bikes
    14 x 1 5/8 350-38A 40-288
    14 x 1 5/8 x 1 3/8 350-42A 44-288
    14 x 1.75 47-288
    279 14 x 1 1/2 350-38B 40-279 Children's bicycles, balance bikes
    254 14 x 1. 5 40-254 Children's bicycles, balance bikes
    14 x 1.75 47-254
    14 x 2 54-254
    239 12 1/2 x 1 3/8 x 1 1/4 300-32A
    300x32A
    32-239 Children's bicycles, balance bikes
    205 12 1/2 x 2 1/4 56-205 Children's bicycles "KVD", balance bikes, sometimes suitable for baby carriages ("Dutik" tires)
    203 12 x 1.75
    12 1/2 x 1.75
    12 1/2 x 1.9
    47-203 Small children's bicycles, balance bikes, baby carriages
    12 x 1.95 54-203
    12 x 2.0 50-203
    12 x 2.125,
    12 1/2 x 2 1/4 R
    57-203
    12 1/2 x 2 1/4 62-203
    176 55-176 Tires for tricycles, scooters, balance bikes for small children, wheelbarrows and carts, prams
    152 10 x 2 54-152
    137 8 x 1 1/4 32-137

    In short, we can say that for adult bicycles, the landing diameter for:

    • 28 and 29 wheels is 622 mm. 29 tires differ from 28 only in height.
    • 27.5 inches - 584 and 590 mm. For these wheels, you need to be careful when choosing rubber, since both landing diameters fit them and often the size “26 x …” is written on tires suitable for these wheels.
    • 26" - 559 mm

    Small but interesting nuances regarding tire width:

    1. Tire width written on it does not always coincide with its actual width. In most cases, it depends on the pressure in it and the methods of measuring the width, especially on studded tires.
    2. Moreover, it sometimes does not coincide with mathematics. For example, a width of 2.125 inches is 54 mm (2.125 * 25.4 = 53.98 mm), but manufacturers, especially Chinese ones, stubbornly write 57 mm on it, although this applies more to a width of 2.25 inches.
    3. That is why, relative to the width written on the tire, calmly, and not with accounting accuracy.

    How to choose the right bicycle tire width

    Tire width selection is more flexible than rim diameter.

    Rim widths are measured and marked in millimeters as shown in the figure at the beginning of the article.

    How to measure the width of the rim is described in a separate article here.

    Tire width versus rim width for different bike types:

    Rim width
    in mm
    Tire width
    in mm and inches
    Bicycle type
    13 18 - 25 mm (1") road and cyclocross models
    15 23 - 32 mm (1" - 1.25")
    17 25-37 mm (1" - 1.5") light cross-country and hybrid models
    18 28 - 44 mm (1.1" - 1.75") heavy cross-country and hybrid models
    19 28 - 60 mm (1.1" - 2.35") MTB (mountain bikes, mountain bikes)
    20 28 -47 mm (1. 1" - 2") cycling and light extreme
    21 35 - 50 mm (1.4" - 2")
    23 40 - 50 mm (1.5" - 2.1") extreme cycling
    25 or more 44 - 57 mm (1.75" - 2.25")
    32 75 mm (3") or larger

    This table is a guideline for a medium bike. Use it not as a dogma, but as a guideline for selection.

    Some manufacturers give their own tables for the tires they produce, according to which they need to be selected for their wheel.

    If the tire is narrower than the rim:

    • the likelihood of punctures is significantly increased
    • rims can be damaged

    If the tire is much wider than the rim:

    • Poor handling at low speed.
    • Tires wear faster - especially the sidewall.
    • Even with a slightly inflated tire, the handling of the bike is greatly reduced.
    • The possibility of it breaking off the wheel rim during a sharp turn increases.

    The width of the tire affects rolling and traction. The wider - the better the grip, cornering control, but the worse the roll.

    It is considered optimal if the width of the tire is 1.5-2.1 times wider than the inner width of the rim. It is possible and 2.5 times, but this is already an amateur.

    The tire-to-rim width ratio affects how the tire behaves when cornering. Too wide tires mounted on a narrow rim can simply break. will have a pear-shaped profile.

    Further, if toothy rubber is installed on the wheel, then the side spikes on the tread will not be where they should be for sure grip in the turn.

    With wide tires on a narrow rim, the side studs will be too high and will not hold well in the turn.

    On narrow tires with a wide rim, the spikes will be from below and with a good slope, the bike will ride on the sidewall, and she is bald.


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