Friday, December 04, 2009

Tire Traction

Traction grades are an indication of a tire's ability to stop on wet pavement. A higher graded tire should allow a car to stop on wet roads in a shorter distance than a tire with a lower grade. Traction is graded from highest to lowest as "AA", "A", "B", and "C".

diagram of tire showing traction designation

Of current tires:

  • 3% are rated “AA”

  • 75% are rated “A”

  • 22% are rated “B”

  • only 1 line of tires rated “C”

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