Editor’s Note: This blog has been updated in 2021 to reflect current industry standards.
In older cars, every model came with a spare tire that matched the tires already on the vehicle. Over the years, car manufacturers have realized the spare tire is used so infrequently, it does not make much sense to equip every car with a full-sized spare. For this reason, manufacturers began leaving a space-saver spare (otherwise known as a donut) in place of a full-size spare.
Nowadays, spare tires should never be a permanent replacement, begging the question, how long can you really drive on a spare tire? The type of spare tire in your vehicle makes a difference in how long and how far you can drive before fixing your tire or buying a new tire.
These narrow, compact spares are designed to save space and weight in the vehicle, allowing the manufacturers to build a smaller car. However, the tire itself is not built to last. Your owner’s manual will give recommendations for driving time and speed. A general rule of thumb is to drive no farther than 70 miles and no faster than 50 miles per hour before replacing your donut with a new tire.
The biggest reason why you should avoid prolonged use of space-saver or donut tires is that they have little to no tread, making the spare vulnerable to road hazards and projectiles. It is also much smaller than the other 3 tires, making it spin faster to keep up with the moving car.
Run-flat tires are becoming more common as manufacturers realize they cost less to maintain than traditional tires. If you drive a recent model BMW or a MINI, your car likely came with run-flat tires. These tires are tougher than most tires but are not designed to last forever, such as a full-spare tire.
Rather than including a spare tire, these run-flat tires are built to withstand most road hazards, including punctures.
Rather than going flat or blowing out (as traditional tires do), a run-flat tire can continue to drive after punctured for about 50 miles before needing to be replaced
. However, these tires cost more to replace than traditional tires.
While you have a bit more room to travel on these types of tires, it is important to inspect your tire as soon as you are aware of any change in tire pressure. This gives you an idea of how long you have until you have no choice but to have your tire replaced.
How Long Can You Drive on a Full-Size Spare Tire?
For years, cars were built with spare tire wells capable of carrying a full-size spare. On many older cars (and a few newer models), this is still the case. If you bought a truck, SUV, or another large vehicle, your car probably is equipped with a full-size spare. While a full-size spare is heavier and requires a larger space for storage, these tires are more durable and can handle a drive similar to a regular tire.
Once you have taken your vehicle to an auto repair shop and learned that the punctured tire is irreparable, you can request the spare tire to be put on the original rim.It is important to note that a full-size spare tire is usually not produced by the same manufacturer as the rest of the tires on your vehicle, meaning it will handle differently than the other tires. We suggest buying a new tire as soon as you can afford to, but this can easily buy you some time.
Christian Brothers Automotive was born out of the idea of not just being an auto repair shop, but also a neighbor. Our mission is simple: to take root in the local communities we serve and to create an uncommonly great experience for customers in need of auto service and repair. To have your tires inspected or to replace a spare tire, please do not hesitate to call or visit your local Christian Brothers Automotive shop. We have 240 plus locations nationwide that are locally owned and operated, providing complete auto care and repair solutions near you.
If you have a flat tire, you know how frustrating a process it is to get your car back to its normal operation. Not only does it disrupt your travel, it also takes time and money to replace a flat. After you change the flat tire and install your spare, you might be wondering: how long can you drive on it?
In this article, we’ll tell you just how far you can drive on a spare tire, what the key differences in types of spare tires are, and best practices for driving on a spare tire.
Let’s jump right in by answering your main question:
You should drive no more than 50 miles on a temporary or donut spare tire if possible. If you absolutely must go longer than 50 miles, avoid driving on it longer than 70 miles. A spare tire isn’t meant to completely replace a tire, rather, its purpose is to tide you over until you can properly replace it.
Additionally, you shouldn’t drive faster than 50 mph on a temporary or donut spare tire, as they have far less traction and durability than a standard tire.
You probably wouldn’t want to drive longer or faster on a spare anyway, as the typical spare can make your vehicle feel more like an airplane ambling down a runway than a car driving down a highway.
Once you are driving your spare, you should replace it with a proper full-size tire as quickly as possible to stay safe on the roads.
Types of Spare Tires:There are several kinds of spare tires, but which one you will use mostly depends on the type of vehicle you’re driving.
These vehicles are significantly heavier than most sedans and mid-sized cars, so the spare tires are usually larger to support the vehicle’s full load, and possibly additional cargo or items being towed.Full-size spares are typically much better quality than a donut spare; however, they still should be replaced as soon as possible. These spares often aren’t as durable, may have narrower wheels than the standard tires, and may not be produced by the same manufacturer as your other tires.
Full-size spare tires should be regularly inspected too, especially if they are secured to the bottom of the vehicle and therefore may be exposed to harsher elements.
How to drive safely on a spare tireRegardless of whether your spare is a donut or a full-size spare, you’ll want to be careful while driving on it. To drive safely on your spare tire, follow these best practices:
Spare tires often have different inflation pressure needs than your regular tires, so it’s wise to check them for proper inflation. Plus, a spare tire isn’t much help if it has low pressure.
Many spare tires have a lifetime of about eight years.As the Midwest’s premier driving school, Top Driver takes pride in preparing our students for everything they encounter on the road and with their vehicle.
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How do you know when tires are completely worn out and it's time to change them? Everything is simple.
For summer tires, the limit is 1.6 mm of residual tread depth, and for winter (or all-season tires used in winter) - 4 mm. Modern summer tires can travel from 40,000 to 70,000 km, depending on driving style and vehicle characteristics. An average motorist rolls such a mileage on summer tires in 2-3 seasons. Moreover, wear implies not only a decrease in tread depth. For millions of cycles of deformation, the strength of the carcass and its adhesion to the layers of the rubber compound are violated. In short, every 2-3 years you should buy a new set of tires.
In case of irreparable damage to one of the tires and a relatively high total mileage of the kit, it is also worth considering replacing it. Well, or about buying at least a pair of new tires, which, for any type of drive, should be installed on the front axle. We put two tires back - the most decent of the remaining ones.
Many motorists drive only a few thousand kilometers a year.
This does not mean that the tires will serve you for several decades. According to Russian requirements (GOST 4754-97), the service life of passenger car tires is 5 years from the date of manufacture. And for example, Continental recommends that all car tires (including the spare tire) older than 10 years old should be replaced with new ones. Therefore, with small runs, you can navigate for ten years. The date of manufacture of the tire is indicated on the sidewall. Usually it is an oval with four numbers. The first two are the ordinal number of the week in the year, the last two indicate the year.
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First of all, during storage, it is important to exclude direct sunlight from hitting the tires, which greatly age the rubber. Tires without rims should be placed vertically, and stacked on rims.
And before installing tires on a car at the beginning of the season, evaluate their condition. There should be no cracks in the tread and sidewalls. The tire should not be dry, it should remain rubbery and not look like baked plastic.
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Winter tires have a much shorter life span. They almost always fail due to the wear of the treadmill, because the tread of a new tire is 7–8 mm, and only 3–4 mm remain working height. If the tires are studded, then with such wear there are very few metal elements left, and the tire will not provide adequate safety when driving on a winter road. However, not only spikes, but also Velcro, with such a degree of wear, also lose most of their capabilities.
The real life of winter tires rarely exceeds 30,000 km. "Bald" winter tires without studs can be re-rolled in summer, but their grip on hot road surfaces will be very poor. This must be taken into account, especially when braking.
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So: tires that have not yet worn out along the tread (that is, up to 1.6 mm tread depth for summer tires, 4 mm for winter tires) are changed either ten years after the date of issue, or when the rubber layer cracks tires or damage.
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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.
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.
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 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 more worn. The cause may be excess pressure in the wheelHow 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.
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.
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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