If you've ever been curious about what all those numbers and letters are on the side of your tires (aside from the brand name, of course), and you've gone down a bit of a research rabbit hole, you'll ...
Tire treadwear ratings, also known as Uniform Tire Quality Grading (UTQG), were developed by the National Highway Traffic Safety Administration (NHTSA) and the U.S. Department of Transportation (DOT).
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