UTQG (Uniform Tire Quality Grading) is a U.S. system that helps you compare passenger tire treadwear, traction, and temperature resistance. The ratings appear on the sidewall (for example: 440 A B) and are based on tests performed by each tire manufacturer using standardized procedures. Use UTQG as a quick comparison within similar tire categories, then factor in your driving, climate, and load needs.
Treadwear: An indexed wear test (baseline = 100) projects relative tread life under controlled conditions and extrapolates to 2/32" remaining depth. A 200 grade suggests roughly twice the life of the baseline; a 400 grade suggests about four times—real-world mileage varies with driving, roads, rotation, alignment, and inflation.
Traction: Straight-line wet braking on asphalt and concrete at ~40 mph. Grades: A (performed well on both), B (well on at least one), C (poor on one or both). This does not measure cornering grip or hydroplaning resistance. See Tire Load & Speed Ratings.
Temperature: Heat resistance at sustained high speed on a lab test wheel. Grades: A (30 minutes at 115 mph), B (passed 100 mph, not 115 mph), C (did not complete 30 minutes at 100 mph). Proper inflation, load, and speed are critical to control heat.
UTQG does not change a tire’s structural capacity. Always select a tire with the correct Load Index and Speed Rating for your vehicle and usage. For deeper context, see Tire Load Ratings and Tire Ply Ratings Explained.
Tell us how you drive (highway commuting, spirited performance, towing, or off-road) and your climate. We’ll recommend tire options that balance UTQG treadwear with traction and temperature needs—without compromising safety or comfort. Explore our overview: Tires & UTQG Ratings.
Reviewed by the Performance Plus Tire Fitment Team.
