Uniform Tire Quality Grading (UTQG)

A tire information system that provides consumers with ratings for a tire’s traction (from AA to C) and for temperature (from A to C). Tread wear is normally rated from 60 to 620. Ratings are determined by tire manufacturers using government-prescribed test procedures and are molded into the sidewall of the tire.

see: https://www.chevrolet.com/certified-service/tire-research

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