Treadwear Rating for All-Season Tires: What Number Works

What is a treadwear rating?

The treadwear rating is part of the Uniform Tire Quality Grading (UTQG) system, a set of grades required by federal law for passenger car tires. The rating is molded into the sidewall and is meant to give you a relative sense of how quickly a tire's tread wears compared with other tires graded under the same conditions. It is not a warranty and does not guarantee a specific number of miles.

The system is designed to help you compare tires. The rating is based on a controlled test on a standard course, but real-world wear depends heavily on your vehicle, driving style, and maintenance. Learn more about how the grade is determined in our explainer on treadwear ratings.

The Uniform Tire Quality Grading standards are found in federal regulation 49 CFR 575.104. The rule requires tire makers to mold the grades into the sidewall for most passenger car tires. It exempts deep-tread snow tires and temporary spares, so you will not see a rating on those.

How to read the number

The number itself is an index. A higher number suggests a slower-wearing tread, while a lower number suggests a softer, faster-wearing compound. However, because the test is run on a standardized course, the number does not translate directly to miles or kilometers. Two tires with the same number from different manufacturers may wear differently in your driving conditions.

When you look at all-season tires, you will see ratings across a wide band. Touring and grand-touring all-season tires tend to have higher ratings, while ultra-high-performance all-season tires often have lower ones. This is a direct reflection of the tradeoff between longevity and grip.

How compound affects treadwear and grip

The treadwear rating is essentially a measure of how resistant the rubber compound is to abrasion. All-season tires use a blend of natural and synthetic rubber, plus fillers like silica and carbon black. The proportion of these ingredients determines whether the tire will wear slowly or provide high grip.

A tire with a high treadwear rating often uses a harder compound that resists wear but provides less traction, especially in cool or wet conditions. Conversely, a lower treadwear rating typically indicates a softer compound that bites into the road better. This is why high-performance all-season tires rarely have very high treadwear numbers.

When you are comparing two all-season tires that appear similar, the treadwear grade can give you a hint about the compound's character. However, it is not the only factor. The tread pattern and siping also affect grip, and the way the tire is constructed matters. Read our guide on tire tread compound for a deeper dive.

Wear rate vs. traction

The fundamental tradeoff in tire compounds is between wear resistance and traction. A harder rubber compound wears slowly but provides less grip, especially in wet conditions. A softer compound grips better but wears quickly. All-season tires try to balance these qualities, but they still sit on a spectrum.

If you prioritize confident handling and short braking distances, you will likely accept a shorter tread life. If you value replacing tires infrequently, you will accept a bit less ultimate grip. Our guide to treadwear versus traction explains this relationship in more detail.

Choosing the right rating for your driving

For most daily drivers and commuters, an all-season tire with a moderate-to-high treadwear rating is a sensible choice. It will give you good year-round capability, including light snow performance, and should last for a respectable number of miles. If you drive a lot of highway miles, a touring-oriented all-season tire with a higher rating can help you go longer between replacements.

If you enjoy sporty handling and often drive on wet roads or dry corners, a somewhat lower treadwear rating in a performance-oriented all-season tire will reward you with sharper response and better grip. The penalty is a faster-wearing tread. Check our best all-season tires for picks that match different priorities.

For trucks and SUVs, treadwear ratings follow a similar pattern, but you also have to consider load range and sidewall strength. Our best all-season tires for cars and SUVs can help you sort through the options.

Consider the climate where you drive. In warmer regions, a tire with a high treadwear rating can still provide acceptable grip because the compound stays flexible. In colder conditions, a softer compound with a lower rating may offer better grip on cold pavement. Our article on tire treadwear for wet roads explores this further.

Factors that affect real-world tread life

The treadwear grade assumes proper maintenance. Under-inflated tires wear more rapidly and can also hurt fuel economy. The U.S. Department of Energy notes that keeping tires inflated to the recommended pressure can improve gas mileage by up to 3% and that properly inflated tires are safer and last longer. Check your pressure regularly with a good gauge.

Regular rotation helps even out wear across all four tires. Wheel alignment and balanced wheels also matter. Neglecting these will cause uneven wear that makes the treadwear rating meaningless. Review our tire rotation patterns and tire balancing explained for guidance.

Carrying heavy loads or towing also accelerates tread wear. The load rating of your tire must match the weight of your vehicle and its cargo. An overworked tire will generate more heat and wear faster. Check your vehicle's tire placard and our tire load capacity chart to ensure you have the right load index.

Common misconceptions

One myth is that a high treadwear rating means a tire is better. That is false; it simply means the tread is more durable. Another is that all-season tires with high ratings perform well in winter. The rating does not measure snow or ice traction. For serious winter driving, you need a tire with the 3PMSF symbol, which is a separate certification. All-weather tires bridge part of that gap, but they still have a finite treadwear rating.

Finally, remember that the treadwear grade is only one piece of the UTQG system. Traction and temperature grades are separate and measure different aspects. Read our UTQG temperature range and traction temperature rating articles to understand all three.

Many buyers confuse treadwear rating with a treadwear warranty. A warranty covers specific conditions and requires you to rotate tires as scheduled. The rating itself does not promise any number of miles, and a warranty is a separate agreement. If you want to compare warranties, look at the warranty documents, not the sidewall.

What to pick for your use

Questions

What does the treadwear rating number mean?

It is a comparative index from the UTQG system. Higher means slower wear, but it is not a mileage guarantee. The test is standardized, but your results can vary.

Can I use the treadwear rating to compare tires across brands?

Yes, the test is standardized, but real-world results vary based on your vehicle and maintenance. Still, it gives a useful relative indication.

Does a higher treadwear rating mean better snow traction?

No, snow traction is determined by the tire's design and compound, not its treadwear grade. Look for the 3PMSF symbol for severe snow service.

How long should an all-season tire last?

There is no fixed number, but with proper care, a tire with a mid-range rating can provide many miles of service. Rotate them and maintain proper pressure to maximize life.

Is a lower treadwear rating always bad?

No, it often indicates a stickier compound that can provide better grip, which some drivers prefer. You trade some tread life for more traction.