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:

Under the Hood
All Compasses are powered by a 172-horsepower, 2.4-liter four-cylinder engine equipped with variable valve timing for adequate pull at all engine speeds. It powers the front wheels through a five- ...

Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of coolant, and to ensure that coolant will return to the radiator from the coolant recovery bottle. The cap should be inspected and cleaned if the ...

Tire Identification Number (TIN)
The TIN may be found on one or both sides of the tire, however, the date code may only be on one side. Tires with white sidewalls will have the full TIN, including the date code, located on the ...