The Uniform Tire Quality Grading (UTQG) is a system developed by the Department of Transportation which helps consumers compare tires in the areas of treadwear, traction and temperature. Following is an example of a tire with a UTQG of 300 AB. The 300 is treadwear, which represents the tire's comparative wear when measured against the government-mandated tire which is rated at 100. So this tire wore three times longer than the control tire. Because of variations in operating conditions, the treadwear grade cannot be used to predict actual wear out mileage; it can be used to predict the relative wear rate of tires with different UTQG wear rates. Traction and temperature are graded A (superior), B (good) or C (average). Traction indicates the level of grip the tire possesses.
Temperature rating deals with the tire’s ability to disperse built-up heat. Heat causes rubber to deteriorate over time, so dispersing heat increases tire life.
Each tire manufacturer determines UTQG ratings for their products.
If you have any questions, please contact your local tire dealer or call Cooper Tire at 1-800-854-6288.