Uniform Tire Quality Grading Standards

A uniform standard to grade the quality of tires with regards to tread quality, tire traction and temperature characteristics. Ratings are determined by tire manufacturers using U.S. government testing procedures. The ratings are molded into the sidewall of the tire.

    See also:

    Overinflated tires
    WARNING Follow recommended tire inflation pressures. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, a ...

    Aspect ratio
    Relationship between tire height and tire width in percent. ...

    Transmission positions
    Park position Do not shift the transmission into position P unless the vehicle is stationary. The parking lock should not be used as a brake when parking. In addition to engaging the pa ...