Infiniti QX: Traction AA, A, B and C - Uniform tire quality grading - Technical and consumer information - Infiniti QX Owner's ManualInfiniti QX: 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 government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.

The traction grade assigned to this tire is WARNING
The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.

    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 ...

    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 ...

    See also:

    Wheel Alignment and Tire Balance
    The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary ...

    Ignition Transmission Lock Check
    While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. ► The ignition should turn to LOCK/OFF only when the shift lever is in P (Park ...

    Auto high beam (green)
    Illuminates when the auto high beam feature is enabled. ...