Buick LaCrosse: Traction – AA, A, B, C - Uniform Tire Quality Grading - Wheels and Tires - Vehicle Care - Buick LaCrosse Owners ManualBuick LaCrosse: Traction – AA, A, B, C

The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.

Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.

    Treadwear
    The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 ...

    Temperature – A, B, C
    The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions ...

    See also:

    Correct driver's seat position
    Observe the safety guidelines on seat adjustment •► Check whether you have adjusted seat = properly. Electrical seat adjustment (Y page 100) When adjusting the seat, make sure: &nbs ...

    Rear License Plate Light Bulbs
    The license plate has two lights above it. The bulbs should be replaced by your dealer. ...

    Vehicle modifications/alterations
    WARNING: Any modifications or alterations to this vehicle couldseriously affect its roadworthiness and safety andmay lead to an accident resulting in serious injury ordeath. ...