Infiniti QX: Temperature A, B and C - Uniform tire quality grading - Technical and consumer information - Infiniti QX Owner's ManualInfiniti QX: Temperature A, B and C

The temperature grades 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 Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

The temperature grade for this tire is WARNING
The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, under-inflation, or excessive loading, either separately or in combination, can cause heat build-up and possible tire failure.

    Traction AA, A, B and C
    The traction grades, from highest to lowest, are AA, A, B and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified govern ...

    Emission control system warranty
    Your INFINITI is covered by the following emission warranties. For USA: ► Emission Defects Warranty ► Emissions Performance Warranty Details of these warranties may be found with o ...

    See also:

    Audio/video controls
    WARNING Do not adjust the touch screen controls, or allow the system to distract the driver, while the vehicle is moving. Driver distraction can lead to accidents, causing serious injury o ...

    Crawl mode (locked access height)
    When the vehicle is at Normal height and traveling less than 22 mph (35 km/h), or at Access height, press down on the raise/lower switch for longer than 3 seconds to lock the vehicle at access hei ...

    Torque Lock
    If you are parking on a hill and you do not shift the transmission into P (Park) properly, the weight of the vehicle can put too much force on the parking pawl in the transmission. It might be diffi ...