You may have noticed markings on the sidewall of your tyres for Treadwear, Traction and Temperature. These are UTQG ratings. UTQG stands for ‘Uniform Tire Quality Grading’. The UTQG ratings originated in America to provide consumers with information to help them purchase tyres based on their relative treadwear, traction and temperature capabilities.
All passenger car tyres that are sold in America must, by law, have these ratings marked on the sidewall. Some tyres sold in Australia do not carry the UTQG ratings so you do not have the information to compare a tyre’s quality.
Treadwear grades are an indication of a tyre's wear rate. The higher the treadwear number, the longer it takes for the tread to wear down.
A ‘standard' control tyre is assigned a grade of 100. The treadwear rate of all test tyres is compared to the ‘standard' tyre. For example, a tyre grade of 200 should wear twice as long as the control tyre. Treadwear grades are tested under controlled conditions using four vehicles fitted with test tyres that run in convoy. The vehicles repeatedly run a specified 640 kilometre road course for a total of 11,520 kilometres. Tread depths are measured every 1,280 kilometres and the measurements for each vehicle are averaged to give a projected wear-out life.
Traction grades are an indication of a tyre's ability to stop in the wet. A higher grade should allow your vehicle to stop on wet roads in a shorter distance than a tyre with a lower grade. Traction is graded from highest to lowest as AA, A, B and C.
Temperature grades are an indication of a tyre's resistance to heat. Sustained high temperature (for example, driving long distances in hot weather), can cause a tyre to deteriorate, leading to blowouts and tread separation. From highest to lowest, a tyre's resistance to heat is graded A, B or C.
UTQG Treadwear Comparison of Mastercraft Tires v Factory Fitted Tyres
The chart shows the treadwear ratings of original tyres factory-fitted to six of Australia’s top selling passenger cars, compared with Mastercraft’s Avenger Touring LSR.
For example, the original tyre fitted to a Toyota Camry has a treadwear rating of 240, compared with 780 for Mastercraft’s LSR. This indicates the Mastercraft tyre could give you up to 3.2 times more mileage.