What is UTQG and what does it mean?

utqg

"UTQG" stands for "Uniform Tire Quality Grading". A system developed by the Department of Transportation, which helps consumers compare and rate tires on tread wear, traction, and temperature. Example: a tire with a UTQG of 400 AB. The 400 is tread wear which represents the tire's comparative wear when measured against the governments mandated tire, which is rated at 100. So the tire rated at 400 would wear four times longer than the government's mandated tire. However, please don't link treadwear grades with your projected tire mileage. The relative performance of tires depends upon the actual conditions of their use and may vary due to driving habits, service practices, differences in road characteristics and climate.

Traction and Temperature ratings are rated (A) superior, (B) good and (C) average. Traction represents the level of grip the tire possesses.

Traction Grades Asphalt g force Concrete g force
AA Above 0.54 0.41
A Above 0.47 0.35
B Above 0.38 0.26
C Less Than 0.38 0.26

Temperature rating shows the tires' ability to disperse heat build-up. Heat is what causes a tire to deteriorate over time. Therefore, a tire that has a high temperature rating will disperse heat better than one with a low temperature rating.