Temperature – A, B, C

The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel.

Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure.

The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.

    See also:

    Using the Navigation System
    This section presents basic information needed to operate the navigation system. Use the buttons located on the navigation system along with the available touch-sensitive screen buttons on the navi ...

    Security Light
    The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your de ...

    Rear Compartment Fuse Block (CTS-V Wagon)
    The rear compartment fuse block is located on the passenger side of the vehicle, behind the trim panel in the rear compartment. The vehicle may not be equipped with all of the fuses and relay ...