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:

General Information
This device complies with FCC rules Part 15 and Industry Canada RSS-210. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device m ...

Automatic Transmission
The DRIVE range can be selected when towing. However, if frequent shifting occurs while in this range, select a lower gear range using the AutoStick shift control (if equipped). NOTE: Selectin ...

Cooling System – Drain, Flush, And Refill
If the engine coolant (antifreeze) is dirty or contains a considerable amount of sediment, clean and flush with a reliable cooling system cleaner. Follow with a thorough rinsing to remove all de ...