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 on ...

Air pollution
Industrial pollution, the presence of salt in the air in coastal areas, or heavy road salt use accelerates the corrosion process. Road salt also accelerates the disintegration of paint surfaces. ...

Training procedure
1. Position the vehicle in a reasonably quiet outdoor location. 2. Sit in the driver’s seat with the engine running, the parking brake on, and the transmission in Park. 3. Push and hold the ...