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Uniform tire quality grading standards

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The treadwear grade is a comparativerating based on the wear rate ofthe tire when tested under controlledconditions on a specifiedgovernment test course. For example, a tire...

The traction grades, from highest tolowest, are AA, A, B and C. Thosegrades represent the tire

The temperature grades are A (thehighest), B, and C, representing thetire
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