Uniform Tire Quality Grade

Toyota Tire Care

Uniform Tire Quality Grade Standards (UTQG)

Tires are graded by tire manufacturers in controlled tests that meet the U.S. Department of Transportation (DOT) and National Highway Traffic Safety Administration (NHTSA) specific standards of performance including: tread wear, traction and temperature tolerance.

Tread wear

The tread wear grade is a comparative rating based on the wear rate of the tire evaluated under government-controlled conditions on a test course.


The traction grade represents a tire's ability to stop on wet pavement as measured under controlled conditions on test surfaces of asphalt and concrete.


The temperature grades represent the tire's resistance to heat when tested under controlled conditions on laboratory test-wheel. Sustained high temperature can create deterioration and reduced tread life.All passenger tires must meet the minimum heat resistance standard of a C. Grades A and B represent higher levels of performance than what the law requires.
; ;