The treadwear rating of a tire is the number listed on a tire's sidewall that states how well the tire wears compared to other tires. If a tire has a 200 rating, it wears twice as long as a tire with a rating of 100.
A tire treadwear rating refers to the amount of time the treads on a tire should last in specific conditions. Tire manufacturers indicate treadwear rating on their tires using a set of numbers between 100 and 700. These numbers indicate how long tire treads will remain safe and perform at their high
A treadwear rating chart is a matrix of numerical grades assigned to a tire based on the uniform tire quality grade standards. Tire manufacturers assign a treadwear rating to each tire model, not as an absolute test of strength but as a comparison between tire models for a given brand.
Safercar.gov provides a comprehensive treadwear rating chart for most of the tires used in the United States. The rating chart is based on the Uniform Tire Quality Grading System developed by the U.S. Department of Transportation. Tires with high treadwear ratings last longer.
A tire with a treadwear rating of 320 should last for approximately 40,000 miles. This is a lower-middle level treadwear rating. Tires with a high-end rating of over 500 should deliver approximately 80,000 miles.
A tire with a "600" treadwear rating is forecasted to last twice as long as a tire with a "300" rating, and should accumulate three times the mileage of a "200" rated tire. To understand how treadwear ratings vary and for basic real world reference points, consider that standard touring all-season tires engineered for high mileage can have treadwear ratings in the &qu...
Treadwear. A higher number means longer tread life under proper conditions. Tires can earn a rating of up to 800 in the UTQG system. Traction. Ratings for the quality of traction provided by the tire are between AA and C with AA being the best. Temperature. The UTQG ratings for heat dissipation are between A and C with A being the best.
Speed rating A letter denoting the tire’s maximum speed when carrying the load defined by the load index—and not how fast you should drive! Standard all-seasons are usually rated S (112 mph) or T...
1) TREADWEAR RATINGS. Treadwear rating is designed to let the consumer know roughly how long the tire tread with last (in miles) before needing replacement. The tire is measured against a control tire which has a grade of 100. This means that a tire of treadwear rating of 200 should go twice as far before wearing out than a tire with treadwear rating 100.
The average friction coefficient (µ) is related to the tire's Treadwear rating by the following formula: = A lower treadwear rating indicates a higher friction coefficient and thus provides a shorter braking distance. A softer, more sticky tire, wears off its material faster to provide this performance.