Tire Treadwear Rating Chart at Chart

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Tire Treadwear Rating Chart. The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. This index refers to the wear rate of the tread.

Tire Code - Wikipedia
Tire Code - Wikipedia from en.wikipedia.org

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. The utqg ratings appear on the tyre sidewall. Tire manufacturers indicate treadwear rating on their tires using a set of numbers between 100 and 700.

Tire Code - Wikipedia

To see a chart with the most common speed ratings please see page 10. 99 rows temperature rating is graded from highest to lowest as 'a', 'b' or 'c'. A tire graded 200 would last twice the distance on the government test course under specified test conditions as one graded 100. A tire rated at 50 has a projected tread life of 15,000 miles.