Uniform Tire Quality Grading

Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:

See also:

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 governm ...

Checking Coolant
The vehicle must be on a level surface when checking the coolant level. The coolant level should be at or above the FULL COLD mark when the engine is cold. The coolant level should be above the ...

Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating. ...