Infiniti QX: Treadwear - Uniform tire quality grading - Technical and consumer information - Infiniti QX Owner's ManualInfiniti QX: 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 would wear one and one-half (1 1/2) times as well on the government course as a tire graded 100. The relative performance of tires depends upon actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.

    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 ...

    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 ...

    See also:

    Detaching and storing the cargo net
    ► Detach guide rod ; from bracket 1. ► Press the red button on the upper and lower guide rods. ► Fold the cargo net and roll it up. ► Close the two Velcro fastene ...

    Precautions on cruise control
    ► If the cruise control system malfunctions, it will cancel automatically. The CRUISE indicator light on the meter panel will then blink to warn the driver. ► If the engine coolant ...

    Speed-dependent mode
    If vehicle speed drops below 5 mph (8 km/h) with the wipers operating, the wipers will switch to the next lowest speed. When vehicle speed increases to over 5 mph (8 km/h), the original wiper spee ...