DOT Quality Grades

Treadwear
Traction AA A B C
Temperature A B C

All passenger car tires must conform to Conform to Federal Safety Requirements
All passenger car tires must conform to Federal Safety Requirements in addition to these grades.◀

    See also:

    The concept
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    1990: the third generation - premiere of the BMW 3-Series Coupé and BMW 3-Series Compact, new six-cylinder petrol and turbodiesel engines
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