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:

    Display
    1 Lane departure warning 2 Active Cruise Control 3 Desired speed 4 Navigation system 5 Speed The collision warning, Night Vision pedestrian warning, or Check Control messages are displayed ...

    ESC OFF usage
    When driving • ESC should be turned on for daily driving whenever possible. • To turn ESC off while driving, press the ESC OFF button while driving on a flat road surface. Never press the ESC ...

    Checking bulbs
    With all doors closed, apply the parking brake and place the ignition switch in the ON position without starting the engine. The following lights will come on: The following lights come on brief ...