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:
Engine Break-In Recommendations
A long break-in period is not required for the engine and drivetrain (transmission
and axle) in your vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 ...
Temperature Grades
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 on a s ...
Special Care
• If you drive on salted or dusty roads or if you drive near the ocean, hose
off the undercarriage at least once a month.
• It is important that the drain holes in the lower edges of the doors, roc ...