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UTQG Tire Ratings Explained

Treadwear • Traction • Temperature — how the grades are tested, what they mean, and where their limits are.

By TireCalculatorHub Editorial Team·Updated: February 21, 2026

REAL-WORLD EXAMPLE

A tire marked 500 A A has a UTQG rating of Treadwear 500, Traction A, and Temperature A. In standardized tests, a treadwear grade of 500 means the tire lasted about 5× longer than the government control tire rated 100 under the same conditions, and roughly 2.5× longer than a tire graded 200 in the same brand family. Traction A indicates strong straight‑line wet braking performance, and Temperature A means the tire resisted heat best at sustained high speeds on a test wheel. In real life, actual mileage and grip still depend heavily on driving style, vehicle, and climate.

UTQG Rating Decoder

Enter the three UTQG values printed on your tire's sidewall (e.g. 500 A A).

Number 60–1000

Wet braking grade

Heat resistance grade

UTQG Rating Reference Guide

Rating TypeRange / GradeMeaning in UTQG TestsTypical Use Case
Treadwear100–200Shortest life in UTQG test; prioritizes gripMax-performance / ultra-high-performance summer tires
Treadwear300–400Balanced wear vs. gripMost daily-driver all-season and performance tires
Treadwear500–700+Longest life in UTQG test; often harder compoundTouring and grand touring all-season tires
TractionAA / ABest / very good straight-line wet brakingMany premium all-season and performance tires
TractionB / CMeets minimum wet braking standardsBudget or older designs (C is the legal minimum)
TemperatureAHighest resistance to heat at highway speedsHigh-speed rated and performance tires
TemperatureB / CAdequate / minimum high-speed heat resistanceStandard passenger tires (C is the minimum allowed)

These ranges are broad guidelines taken from how UTQG tests are structured, not strict cutoffs. Always check the specific tire’s datasheet, warranty, and independent tests to understand how it performs in real conditions.

How to Use This Guide

  1. Find the UTQG string on your tire sidewall (for example, 320 A A or 500 A B).
  2. Use the interactive tool to input different UTQG ratings and see how treadwear, traction, and temperature trade off against each other.
  3. Compare candidate tires: higher treadwear for longevity, higher traction and temperature grades for wet braking and high-speed durability.
  4. Read the explanations below to understand how UTQG is tested, what each grade covers, and why ratings are best used within the same brand line rather than across all brands.

UTQG Rating System Explained

UTQG Rating Format and What Each Part Means Standard Format: Treadwear Traction Temperature Example Sidewall Marking: 500 A A 1) Treadwear (3-digit or 2-digit number) • Baseline: A government-specified Course Monitoring Tire (CMT) is graded 100. • Relative Index: treadwear_grade = (tire_wear_life ÷ control_tire_wear_life) × 100 – 200 → expected to last about twice as long as the 100 control tire in the UTQG test. – 500 → about 5 times as long as the 100 control tire in the UTQG test. • Important: This is a comparative index from controlled tests, not a mileage promise, and it is most meaningful when comparing tires within the same brand family. 2) Traction (AA, A, B, or C) • Measures straight-line wet braking performance on standardized asphalt and concrete test surfaces. • Grades, from highest to lowest: AA → highest wet braking coefficient A → very good wet braking B → acceptable wet braking C → minimum allowed for passenger tires • Limitations: – Does not measure cornering grip, hydroplaning resistance, snow/ice traction, or dry braking. 3) Temperature (A, B, or C) • Measures the tire’s ability to withstand and dissipate heat at sustained high speeds on a laboratory test wheel. • Grades, from highest to lowest: A → highest heat resistance at higher sustained speeds B → moderate C → minimum performance required for legal sale • Critical for: – Heavy loads, high ambient temperatures, and long highway trips where heat buildup can damage tire structure. Key Notes: • UTQG ratings are required on most U.S. passenger car tires, but not on winter tires, LT-metric truck tires, temporary spares, trailer tires, or tires under 12" in diameter. • Manufacturers test and assign their own UTQG ratings following NHTSA procedures; the government can audit and penalize obvious misratings, but does not routinely retest every tire. • Use UTQG as one data point alongside professional reviews, performance tests, and the tire manufacturer’s own mileage warranty.

Understanding UTQG Ratings in the Real World

What UTQG Is — and Is Not

UTQG was created to give consumers a simple way to compare basic aspects of tire quality under standardized tests: relative treadwear, straight-line wet braking traction, and high-speed heat resistance. It is not a complete performance score. UTQG says nothing about dry grip at the limit, snow and ice traction, hydroplaning resistance, noise, comfort, or steering feel, so it should always be read alongside professional tests and reviews.

Why Treadwear Is Only a Relative Index

Treadwear is measured by running the test tire and a control tire together over a fixed-distance course, then comparing how much each one wore. That gives a useful index for that company's product line, but because each manufacturer can choose its own control tire, a 400 from one brand is not guaranteed to deliver the same mileage as a 400 from another. For actual mileage expectations, the manufacturer's warranty and independent wear tests are often more informative.

Putting UTQG to Work When You Shop

When you compare tires, think of UTQG as a quick filter: higher Treadwear for potential longevity, AA/A Traction and A Temperature for safety under wet and high-speed conditions. From there, dive into detailed tests and owner feedback to choose a tire that matches your priorities for braking, cornering, comfort, and noise. Matching all four tires and following proper inflation and rotation intervals will do as much for real-world safety and tire life as choosing the perfect UTQG combination on paper.

Frequently Asked Questions

Disclaimer

UTQG grades are assigned by tire manufacturers following U.S. NHTSA procedures and are intended for comparison under controlled test conditions. They do not guarantee a specific mileage or performance level for any individual driver, vehicle, or climate. Always consider UTQG together with the tire manufacturer’s recommendations, published test results, and professional advice when selecting tires for your vehicle.