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:

Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride. Over-inflation produces a jarring and uncomfortable ride. Both under-inflation and over-inflation affect the stability of the vehicle and ...

Ride & Handling
Another big surprise was how nice the Liberty was in highway driving. I found the ride quite pleasant on long commutes, with little shimmying from road imperfections and little wind noise for such ...

Automatic Door Locks — If Equipped
The auto door lock feature default condition is disabled. When enabled, the door locks will lock automatically when the vehicle’s speed exceeds 15 mph (24 km/h). The auto door lock feature can ...