How many miles should a set of tires last


Guide to How Long A Tire Lasts

The question, "How long does a tire last?" tends to be followed by several others like, “What causes a tire to wear? When should tires be replaced? What can be done to make tires last longer?” Fortunately, we can help provide clarity around these questions.

HOW LONG A TIRE LASTS


There is no exact answer to how long a particular tire will last, but there are things a driver can do to get the most out of their tire investment and avoid driving on unsafe tires. On average, people drive between 12,000 to 15,000 miles a year, which means the average good quality all-season tire will last somewhere between three and five years, depending on maintenance, driving style and conditions, etc.

 The National Highway Traffic Safety Association (NHTSA) states a driver is three times more likely to be involved in a crash caused by poor tire condition. Safer is smarter when it comes to the health of tires, so if there is ever a question on tread wear or age, have the tires checked.

FACTORS THAT INFLUENCE HOW LONG A TIRE LASTS

Multiple factors play a role in how long a tire may remain in service. Miles driven, road conditions, driving style, maintenance and age all affect how long a tire lasts.

Worn vs. Aged

Tires naturally wear the more they are driven and worn out tires provide reduced traction compared to those with adequate tread, especially in adverse weather conditions.  Most drivers understand worn out tires (remaining tread depth at or below 2/32”) should be removed from service.

Many drivers are not aware that minimally used tires, like the ones on recreational vehicles, collectible cars, or even spare tires, tend to experience aging instead of wearing, due to a lack of driving. An aged tire has a substantial amount of tread; however, the structural integrity of the tire is weaker because the tire needs to be driven for the chemicals in the rubber to remain effective.

Curbs, Potholes, and Other Hazards

Hitting curbs or driving on roads in poor condition (potholes, broken pavement, poorly graded railroad crossings, unpaved roads, etc. ) can cause misalignment, and suspension damage that affects tire wear. If your daily drive includes these challenges, be sure to schedule annual suspension, alignment and tire checks.

Weather Conditions

Driving in poor weather conditions like ice, snow, and rain can cause tires to wear quicker because they must work harder to maintain traction. Purchasing tires that are specially engineered to perform in specific weather conditions can provide drivers with an extra measure of traction and control (meaning greater safety) while delivering good treadwear.

Bridgestone offers different types of tires designed to keep you and your car safe during any weather or road condition. For example, Bridgestone's Blizzak tire series is built to perform in harsh winter weather conditions providing durable traction on snowy and icy roads, and the Dueler tire series is one of several that offer a secure grip on wet road conditions for areas that experience heavy rain.

Poor Driving Habits

Poor driving habits like hard cornering, quick acceleration, and sudden braking can increase the stress on tires tremendously, causing them to wear rapidly. Drivers can extend the life of their tires significantly by avoiding aggressive driving.

Neglected Maintenance

It is important to regularly have tires checked for damage, to maintain air pressure levels, and to keep tires aligned and rotated. Without proper maintenance, tire life can be reduced by as much as half - even more, in some cases.

KNOWING WHEN TO REPLACE TIRES

If the below signs are evident with your tires, it may be time to have them replaced. 

Low Tread Depth

Tread loss is a significant sign a tire needs to be replaced. Low tread is a sign driver can physically see happening on their tire. Depending on the part of the tire that is wearing, there may be other problems with the vehicle.

    Pronounced inner or outer shoulder wear: tires are misaligned

    Edge of the shoulder wear: tires are under-inflated, need to be rotated or both.

    Center wear: tires may be overinflated or have been subjected to extremely hard acceleration.

    Cupped wear: the vehicle is experiencing suspension problems

    All tires have tread wear indicators built-in, but if the tread looks low take time to do the penny test on the tires.

    Rough Drive

    If you’re experiencing a vibration (particularly if it just started), or high (and increasing) levels of tire noise it may be a sign your tires are out of balance, not wearing properly or have a structural issue.  In some cases, this may affect safety, so have your tires checked by a qualified professional asap.

    DOT Number

    The U.S. Department of Transportation (DOT) number on the tire’s sidewall is another way to help keep track of when they need to be replaced. It’s easy to identify - look for the letters “DOT” followed by eleven or twelve letters and numbers.  On tires made after the year 2000 the final four digits signify the week and year of manufacture. So, a tire with “3618” would have been made in the 36th week or 2018. A tire that has a 3-digit week-and-year code means the tire was made before the year 2000 and should be replaced due to age.

    Bridgestone recommends that its Bridgestone or Firestone brand tires be removed from service after ten years regardless of their remaining tread depth.  They also recommend periodic inspections by a qualified technician for damage such as punctures, impact damage, signs of improper inflation or overloading, or other conditions resulting from the use or misuse of the tire.

    HOW LONG A TIRE LASTS: EXTENDING TREAD LIFE

    Tires are both one of the largest maintenance expenses a vehicle owner is likely to face, and one of the most critical in terms of driving safety and performance.  For both reasons it’s important to care for them properly. Bottom line: good maintenance and driving habits help keep drivers safe, and it saves them money by extending tire life.

    Easy Does It

    Tire life can be reduced by as much as half when they’re subjected to a lot of hard braking and aggressive acceleration from a standstill.  Avoiding tailgating to reduce the need for frequent hard braking will increase tire life. Easing into the throttle when pulling away from a stop reduces strain on the tires and improves wear. Slowing before sharp corners also reduces stress on tires, as does avoiding potholes and broken pavement when possible. If you’re interested in spending less on tires, following these steps can help.

    Regular Maintenance

    Another way to extend tire life is to keep up with the proper maintenance of a vehicle and its tires. A couple of things you can do yourself are to check the air pressure and tread depth.  You should have a qualified technician periodically check their balance and alignment and be sure to have tires rotated at regular intervals. maintenance is essential for your tires to perform their best and last their longest.

    How Long Should a Set of Tires Last?

    It may be tentative, but tires do have an expiration date. There is a general consensus that most tires should be inspected, if not replaced, at about six years and should be absolutely be swapped out after 10 years, regardless of how much tread they have left.

    How do you know how old your tires are? There’s a code on the sidewall that you can read about here. Wear is a far more straightforward consideration: Tiremakers and safety advocates say a tire is worn out when its tread depth reaches 2/32 of an inch. That’s all fine, but what most car owners want to know is how long to expect a set of new tires to last before they need to be replaced.

    “I wish it were simple to say how long each tire might last, but tires are different,” said Dan Zielinski, a spokesman for the U.S. Tire Manufacturers Association (USTMA). “Some tire manufacturers offer a warranty as high as 80,000 miles or more, reflecting confidence in that particular product’s longevity based on its engineering, technology, and design. Other tires may be built to provide 30,000 miles of service.” Or less; some high-performance tires on cars driven aggressively will be worn to the 2/32-inch point without ever seeing 15,000 miles, but those are extreme cases.

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    The average American drives between 14,000 and 15,000 miles a year, according to data from the Federal Highway Administration. Zielinski said that, if you’re kind to your tires—that is, you aren’t constantly peeling out at stoplights and you properly maintain them—most new tires on the market today will last about 60,000 miles. For what it’s worth, the USTMA did a review of several thousand recently scrapped tires and found that most were three to four years old. There was no way of telling how many miles were on those tires, but it’s easy enough to multiply four years by 15,000 miles annually to confirm the rough approximation of tire durability.

    If you want to figure out how soon you’ll wear out the tires on your car, Zielinski said it would be a good idea to start by determining how many miles you drive each year. Divide the number of miles on the odometer by how many years you’ve owned the car (starting, obviously, from when you first got the car and accounting for any mileage it had on it at that time). Then you can compare that with any advertised warranty on the make and model of the tires and figure out how many years of service to expect. If you live where winter tires are advisable and swap those onto the car for some months of the year, your regular tires will get less use and will endure for a longer period of time, but remember the caveats about tire age.

    Zielinski also noted that if you hit the wear bars at 50,000 miles on a set of tires with a 60,000-mile warranty, for example, tiremakers that offer such coverage will typically prorate the price of a new set. In this example, you could expect a discount on the new set equal to one-sixth their price, or about 17 percent. You might not get it, though, if you decide to change brands.

    Kypros/Getty Images

    In general, the best way to preserve the life of your tires, and keep yourself and your passengers safe, is to maintain them properly. Here are some tire basics and maintenance tips:

    Tread

    A tire is considered unsafe, and should be changed, once its tread is worn down to 2/32 of an inch, according to the National Highway Traffic Safety Administration (NHTSA). Many tires have tread-wear indicators, which are little bars in the tread that show when the tire is worn down to replacement level. These will start making noise to alert the driver that they need attention. You can also use a penny: NHTSA recommends putting the penny in the tread with Abraham Lincoln’s head upside down and facing toward you. If you can see the top of Abe’s head, it’s time for new tires.

    Pressure

    To ensure even wear, tiremakers and auto companies recommend that vehicle owners check their tire pressures monthly. The pressure should be at the vehicle manufacturer’s recommended level, which is usually found in the car or truck’s doorjamb or in the owner’s manual. One quick and easy way to check tire pressure is with a handheld tire-pressure gauge, which you can find starting around $10 at an auto-parts store. Tire shops will often check the pressure for you. Some gas stations have digital readouts as part of their air pumps; these are not always accurate, though. It’s best to check the pressures when the tires are cold, meaning that they have not been driven on for several hours. So you’re better off checking them at home after the car has been parked overnight.

    Balance and Alignment

    Tires need to be round, and the tire/wheel combination needs to be balanced. Tire shops and mechanics will use a balance machine, which spins the wheel to see where high and low spots are and detects any imbalance. The tire shop will then add weights, which are hammered onto the wheel, to balance them. These shops can also make sure your wheels are aligned to keep the car tracking straight, which also reduces tire wear.

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    Rotation

    Rotating your tires can help prolong their lives. For front-wheel-drive vehicles, the tires in the front will wear more quickly and can be swapped with the rear ones. The inverse is true for rear-wheel-drive cars and trucks. All-wheel-drive models, too, may need rotation. Most owner’s manuals contain a recommended pattern for rotating tires to spread the wear evenly. The USTMA recommends tires be rotated every 5000 to 8000 miles.

    How much can you drive on one set of tires - Kolesa.kz || Read

    Many drivers will have their own opinion on this matter. Some will focus on the requirements of the law, namely the minimum tread depth. Others will say that tires should not be used for more than five years, after which the rubber loses its properties and becomes "wooden". Still others will remember that they read about mileage limits ranging from 40 to 60 thousand kilometers. The fourth will operate only with the amount of money in the wallet.

    There is, of course, a very desperate group of motorists. These guys drive to the last and erase the "meaty" tires to the state of a racing slick. Well, individual adepts can be seen rustling spikes on the asphalt in mid-July.

    How do you like the rear tires of this Mitsubishi Galant?

    Whose approach is correct? There is no definite answer, except that the latter pose a serious danger both to themselves and to other road users. Almost all the remaining methods have some logic behind them.

    Tread depth

    Driving with tires with less than the required tread depth is punishable by a fine. The police rarely pay attention to this, but it is worth keeping in mind the administrative responsibility. So, according to part 5 of article 590 of the Code of Administrative Offenses of the Republic of Kazakhstan, 5 MCI, or 13,890 tenge in 2020, will have to be paid to the treasury. Repeated violation within a year increases the penalty to 20 MCI (55,560 tenge).

    The minimum residual tread depth is specified in clauses 5.6.1 and 5.6.2 of Appendix No. 7 TR TS 018/2011 "On the safety of wheeled vehicles". The text says that for passenger cars, the balance must be at least 1.6 mm for summer tires and at least 4 mm for winter and marked with signs: M + S, M & S and M S.

    Note that measuring the tread depth with a ruler is an extreme step. Almost all modern tires have special wear indicators. As soon as they appear, the rubber should be replaced.

    Tire age

    The average life of almost all tires from major manufacturers is 7-10 years, depending on their seasonality. True, such a duration should be expected if a number of operational requirements are met. These include driving on high-quality roads with optimal tire pressure, correctly set wheel alignment angles and a normally working suspension.

    Tire age can be found by a special marker. The four digits enclosed in an oval (more often found on the inner sidewall) are the DOT marking, in a simple way, the production date. The first two digits indicate the week, and the last two indicate the year of manufacture.

    Any of the above parameters can significantly reduce the life of the rubber. For example, with insufficient pressure in the wheel, the side parts of the tread will wear off faster, with high pressure, its middle part. Violations in the geometry lead to uneven tire wear.

    The middle part of the tread is worn more. The reason may be an excess of pressure in the wheel

    How and where the rubber is stored is also an important factor. Manufacturers recommend a dry, cool and dark room.

    In Kazakhstan, you should not count on more than five years of operation. Nevertheless, one set of wheels can really drive for about ten years. Whether it's worth it is a completely different question. From personal (almost) experience: tires manufactured in one of the CIS countries served from mid-2008 to spring 2018. The annual mileage of the car was small, about 10,000 km per year, including sorties on light off-road. The rest of the tread after all this time would have allowed the same amount of travel, but when one of the tires was removed for repair (the wheel was regularly flattened), the landing board literally crumbled.

    Mileage

    Another benchmark for tire replacement is mileage. There are often recommendations on the Web that refer to GOST. Their text says: for passenger cars with a carrying capacity of up to two tons, the service life of tires is 45,000 kilometers.

    You can also find references to the operating mileage standards for vehicle tires approved by the Ministry of Transport of the Russian Federation. In them, the average service life varies from 40 thousand kilometers for Russian rubber to 60 thousand for foreign. Note that this document became invalid after the entry of the Technical Regulations of the Customs Union.

    You can also determine how much a tire can run by using the Treadwear (TW) parameter, which indicates the tire wear index. He rarely receives attention. This figure is usually of interest to those who plan to operate the car in a sports environment. Soft and, accordingly, tenacious rubber has a fairly low TW, which racers are guided by.

    Surely you have a reasonable question about how the wear resistance index correlates with mileage. TW appeared thanks to the specialists of the National Highway Traffic Safety Administration (NHTSA). To calculate it, the tire at the test site is compared with a special sample, the TW of which is already known.

    According to the methodology, the TW100 is equivalent to 48,000 mileage until the tires are completely worn out, that is, Nokian Hakka Green, for example, having a TW400, is capable of serving up to 192,000 kilometers. True, in the real world, wear is influenced by many factors that we talked about above, as well as driving style. Therefore, the results of calculations for TW are recommended to be divided by two. It turns out 96 thousand, or almost 5 years of operation, provided that in the warm season the car drives about 20 thousand kilometers.

    Incorrect tire pressure can significantly reduce tire life. Don't forget to check it

    In total, we have three parameters that should help with understanding how long tires will last if they are used correctly, and also tell you when to send a set of tires to the scrap and take care of buying new ones. This can be done on the Kolesa.kz portal using the search form in the "Spare Parts" section.

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    Car tire use - expiration date, how to determine the degree of wear, when to change tires

    Car tires - an elastic shell mounted on a disc rim. It is the tires that dampen the small vibrations that occur due to imperfect roads and compensate for the inconsistency in the trajectories of the wheels. The characteristics of tires affect: driving comfort, maneuverability and vehicle stability. However, even the highest quality rubber eventually deteriorates. Therefore, every driver should know how to correctly determine the degree of tire wear in order to replace them in time. Car and truck tires have different periods of use, depending on both the initial characteristics of the products and the operating conditions.

    Regulatory service life of car and truck tires

    Tires wear out not only due to operational loads. They are characterized by natural aging, since the rubber compound from which the tires are made gradually loses its elasticity and resilience. The use of such rubber leads to a deterioration in vehicle controllability and creates dangerous conditions due to the high probability of tire rupture on the way.

    In accordance with GOSTs 4754-97 and 5513-97, the warranty period for car tires is 5 years. Foreign manufacturers claim that the working life of tires is 5-10 years. There are no legislative acts obliging drivers to change tires after this period, but in order to create safe driving conditions, the driver must take into account the recommendations of GOST. Manufacturers usually set their own warranty periods.

    Michelin, Bridgestone, Nokian, Continental, Dunlop, Pirelli, Yokohama:

    Brand

    Warranty period declared by the manufacturer

    Bridgestone

    Tire dependent - 3-6 years

    Nokian

    5 years

    Continental

    10 years old

    Dunlop

    Tire dependent

    Pirelli

    Tire dependent

    Yokohama

    5 years

    Michelin

    10 years old

    During the warranty period, the responsibility for identified significant defects rests with the manufacturer. The owner of the vehicle will be forced to eliminate defects on his own if there have been:

    • violation of the storage conditions for tires, as a result of which certain defects appeared on the products;
    • installation on a disk that does not match the tire;
    • deformation, corrosive wear and severe contamination of the rim;
    • Combination of tires and tubes with non-corresponding designations;
    • non-professional tire assembly;
    • operation of a tire with incorrect internal pressure;
    • mechanical and chemical damage to tires;
    • installation of tires with a tread depth below the permissible level;
    • no warranty card;
    • installation on a vehicle with broken axle geometry or damaged suspension;
    • use of tires out of season;
    • pre-repair products.

    If the vehicle is used intensively, it may be necessary to replace the tires before the end of the warranty period. Therefore, regulatory documents establish the mileage after which you should think about replacing tires.

    The maximum standard mileage is:

    • for a car with a carrying capacity of up to 2 tons - 45 thousand km;
    • for trucks with a carrying capacity of 2-4 tons - 60 thousand km;
    • for trucks with a carrying capacity of over 4 tons - 65-70 thousand km.

    Factors affecting car and truck tire wear

    The actual rate of tire wear may differ from the standard values ​​due to a whole list of factors, such as:

    • Driving style. When driving with hard braking and jerking at the start, tires wear out much faster than when driving carefully.
    • Driving on poor roads. When it gets into the pits on the tires, “hernias” appear, which sharply reduce the operational period of the products.
    • The quality of the rubber compound used in the production of tires. This factor greatly affects how many years you have to change the tire. Low-quality products under the influence of abrasive particles wear out very quickly.
    • Equipment workload. If the car is often loaded above the established norm, then the rubber wears out at an accelerated pace.
    • Vehicle serviceability. On faulty equipment, tires wear out much faster.
    • Conditions for storage of tires in the intervals between their operation.

    How to check tire wear

    You can determine the need for tire replacement yourself by the following signs:

    • The protector has worn down to a critical level. In order to assess tire wear, you need a ruler with a depth gauge.

    Table of minimum allowable tread depth for different modes of transport as amended on 01/01/2015

    Minimum allowable remaining tread depth

    Type of transport

    0.8 mm

    L - motorcycles, mopeds, quad bikes

    1. 0 mm

    N2, N3, O3, O4 - trucks with a maximum permissible mass of more than 3.5 tons and trailers with a maximum permissible mass of more than 3.5 tons

    1.6 mm

    M1, N1, O1, O2 - cars, trucks and trailers with a maximum authorized mass of less than 3.5 tons

    2.0 mm

    M2, M3 - buses

    4.0 mm

    Winter tires marked M+S, M&S, M S, the amount of residual tread depth does not depend on whether tires are installed on cars or trucks

    • The appearance of one or two wear indicators - protrusions along the bottom of the tread groove, corresponding to the minimum allowable tread depth.
    • The appearance of local damage - through and non-through cuts, breakdowns, delaminations in the carcass, swelling, local delamination of the tread, sidewalls and sealing layer.
    • For studded tires, the end of life is determined by the number of studs remaining on the surface. If it does not exceed 50% of the original value, then the tires must be replaced.
    • Surface cracking.

    Important! If the outer edges of the tire wear faster, the internal pressure is insufficient. Accelerated wear of the central part indicates excessive pressure. Wear on one side indicates a violation of the toe angle. Uneven surface wear is evidence of aggressive driving with rapid acceleration and hard braking.

    How to extend the life of your tires

    You can extend the life of your tires by doing the following:

    • regular car maintenance;
    • tire pressure check - under-inflated and over-inflated tires fail much faster;
    • wheel balancing;
    • inspection of tires for damage;
    • periodic monitoring of tire wear by checking the remaining tread depth;
    • compliance with the conditions of seasonal storage of tires.

    Shelf life of tires

    Normative document regulating the terms and conditions of tire storage - GOST 24779-81.


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