See also:

Uniform tire quality grading
DOT (Department of Transportation) Quality Grades: All passenger car tires must conform to federal safety requirements in addition to these grades. Quality grades can be found where applicable ...

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 wou ...

Brake warning light
or This light functions for both the parking brake and the foot brake systems. Parking brake indicator When the ignition switch is placed in the ON position, the light comes on when the parking ...