Key takeaways
- UTQG stands for Uniform Tire Quality Grading, a US system printed on many tyres covering treadwear, traction and temperature.
- Treadwear is a relative number set by the maker, useful for comparing within a brand rather than across brands.
- Traction grades (AA, A, B, C) rate straight-line wet braking, and temperature grades (A, B, C) rate heat resistance at speed.
- It is a US-origin rating, so read it alongside the EU tyre label rather than in place of it.
Look closely at a tyre sidewall and you may spot the word TREADWEAR followed by a number, then TRACTION and TEMPERATURE with letter grades. That is the UTQG rating, an American system that turns up on plenty of tyres sold worldwide. It can help you compare tyres, but only if you know what each grade really measures and where its limits lie. Here is a plain guide to reading it.
What is a tyre's UTQG rating?
UTQG stands for Uniform Tire Quality Grading, a United States system that grades a tyre on three things: treadwear, traction and temperature resistance. The grades are moulded into the sidewall so buyers can compare tyres on a common scale. It applies to many standard passenger tyres, though not to winter tyres or certain specialist types.
The system was created to give American consumers a consistent way to judge tyres. Because so many tyres are made for a global market, the UTQG marks often appear on tyres sold in the UK too, sitting alongside the EU label information. Reading them adds useful context, as long as you treat each grade for what it is.
What does the treadwear number mean?
The treadwear number rates how long a tyre's tread is expected to last, relative to a reference tyre, with a higher number suggesting longer life. A tyre graded 400 is designed to wear longer than one graded 200 from the same maker. It is expressed as a simple number, often between around 100 and 800.
The important catch is that treadwear is a relative manufacturer grade, not a guaranteed mileage. Each maker runs and interprets the test itself, so the numbers are most trustworthy for comparing tyres within one brand's range. Comparing a treadwear number across two different brands is far less reliable, because they may not grade to the same yardstick.
What do the traction and temperature grades mean?
The traction grade rates a tyre's straight-line wet braking on a test surface, from best to worst as AA, A, B and C. The temperature grade rates how well the tyre resists and dissipates heat at speed, graded A, B or C. Both describe safety-related properties, and higher grades are better, with C the minimum allowed.
| UTQG grade | What it measures | Scale (best to worst) |
|---|---|---|
| Treadwear | Relative tread life vs a reference tyre | Higher number, longer life |
| Traction | Straight-line wet braking grip | AA, A, B, C |
| Temperature | Heat resistance at sustained speed | A, B, C |
One limit worth knowing is that the traction grade covers straight-line wet braking only. It does not measure cornering grip, dry handling or how the tyre behaves at the limit. So a strong traction grade is reassuring for wet stopping, but it is not the whole picture of how a tyre grips, which is why other ratings still matter.
Where do you find the UTQG rating?
You find the UTQG rating moulded into the tyre sidewall, usually as the words TREADWEAR, TRACTION and TEMPERATURE followed by their grades. It sits among the other sidewall markings, near the size code and the maker's details. On tyres sold in the UK it appears alongside, not instead of, the EU label ratings.
If the markings are hard to make out, they are often clearest on a new tyre before road grime builds up. While you are reading the sidewall, it helps to know the rest of the code too. Our guide on what the numbers on your tyre mean walks through the size, load and speed markings that sit alongside the UTQG grades.
How useful is UTQG for UK drivers?
For UK drivers, UTQG is a helpful secondary reference rather than the main one. The treadwear number gives a rough sense of longevity within a brand, and the traction and temperature grades offer basic safety context. But it is a US-origin system, so it should sit alongside the EU tyre label and independent tests, not replace them.
In everyday terms, the EU label's wet-grip and fuel grades are usually more relevant to how a tyre behaves on British roads, because they are measured to a common European standard. Use UTQG to compare longevity within a range and to sanity-check wet traction. Our guides on the EU tyre label and how long tyres last cover the measures most UK buyers lean on.
Choosing and fitting the right tyre
Grades are a starting point, but matching the correct size and ratings to your car matters more than any single number. Fast Tyre supplies and fits tyres to suit your driving at your home, workplace or roadside across London and central England, usually within 30 to 60 minutes, through our mobile tyre fitting service. Call 07717 389637 and we will help you get the right tyre fitted.
Frequently asked questions
UTQG stands for Uniform Tire Quality Grading, a United States system that grades a tyre on treadwear, traction and temperature resistance. The grades are moulded into the sidewall so buyers can compare tyres on a common scale. It appears on many tyres sold in the UK too.
A higher treadwear number suggests longer tread life, but it is only a relative grade set by the maker, not a mileage promise. It is most reliable for comparing tyres within one brand. Comparing the number across different brands is far less dependable, so treat it as a rough guide.
Traction grades run AA, A, B then C, from best to worst, and AA or A is a strong wet-braking result. Remember it measures straight-line wet stopping only, not cornering grip or dry handling. A good grade is reassuring, but read it alongside the EU wet-grip rating too.
No. UTQG is a US-origin system, while the EU tyre label uses a common European standard for wet grip, fuel economy and noise. For UK drivers the EU label is usually the more relevant guide. Use UTQG as a secondary reference, especially the treadwear number, rather than a replacement.
No. UTQG applies to many standard passenger tyres but not to winter tyres and certain specialist types. Because tyres are often made for a global market, the marks frequently appear on tyres sold in the UK, but you may not find them on every tyre you look at.