Department Of Transportation Uniform Tire Quality Grades

Jeep Wrangler / Jeep Wrangler Owner's Manual / If You Need Consumer Assistance / 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:

Driving In Snow, Mud And Sand
In heavy snow, when pulling a load, or for additional control at slower speeds, shift the transmission to a low gear and shift the transfer case to 4WD LOW if necessary. Refer to “Four-Wheel Dr ...

Automatic Transmission
CAUTION! Damage to the transmission may occur if the following precautions are not observed: • Shift into PARK only after the vehicle has come to a complete stop. • Shift into or out of RE ...

Treadwear
The Treadwear grade is a comparative rating, based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 woul ...