What's the point?
UTQG (Uniform Tire Quality Grading)
UTQG measures a tire's performance with three comparative data. These data are the results of closed circuit tests under optimal conditions. It is important to understand that each manufacturer performs these tests independently and gives UTQG rating to its products. The UTQG rating is for comparative purposes only and does not constitute a guarantee. Therefore it is impossible to compare the UTQG between two manufacturers, for example a Toyo tire and a Michelin tire. UTQG applies for tires of 13 "or more and does not apply to winter tires.
What do we know about UTQG's datas?
1. Treadwear
The ratings generally range from 60 to 700 and even up to 800. The basic index is 100, so a tire with an index of 240 is supposed to last 2.4 times longer than a tire index of 100. This index can also be used to calculate approximately the mileage a tire will do under normal conditions (inflation of the recommended tire, speed, driving etc.) Here is how to calculate; Let's use an example with rate 300 :
300 X 200 = 60000Km a little too optimistic
300 X 150 = 45000Km more realistic
300 X 100 = 30000Km sport driving
2. Traction
This rating is represented by the letters AA (highest index) A, B and C (lowest index). This index represents the ability of the tire to stop the car on a wet road in a straight line. Therefore, the higher the traction rating, the shorter the braking distance.
3. Temperature (Resistance to heating)
This rating tells us the tire's resistance to heating and the ability to dissipate heat. This index is represented by the letters A (top quality) B and C (the lowest index but meets the minimum requirements imposed by the Law). This index is calculated on the basis of a tire inflated to the required pressure, used under normal conditions (no overload or excessive speed). Excess heat can degrade the tire quickly. Therefore, the higher the temperature index, the more the tire is resistant to heating.