Department Of Transportation Uniform Tire Quality Grades
The following tire grading categories were established by the National Highway Traffic Safety Administration. The specific grade rating assigned by the tire’s manufacturer in each category is shown on the sidewall of the tires on your vehicle.
All passenger car tires must conform to Federal safety requirements in addition to these grades.
See also:
Snow Plow
Snow plows, winches, and other aftermarket equipment
should not be added to the front end of your vehicle. The
airbag crash sensors may be affected by the change in the
front end structure. The ...
Traction Grades
The Traction grades, from highest to lowest, are AA, A, B, and C. These grades
represent the tire’s ability to stop on wet pavement, as measured under controlled
conditions on specified governme ...
Preparations For Jacking
1. Park the vehicle on a firm, level surface. Avoid ice or
slippery surfaces.
WARNING!
Do not attempt to change a tire on the side of the
vehicle closest to moving traffic, pull far enough off ...