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:

    Removing a wheel
    ► Unscrew the uppermost wheel bolt completely. ► Screw alignment bolt 1 into the thread instead of the wheel bolt. ► Unscrew the remaining wheel bolts fully. Do not place wh ...

    Armrest (if so equipped)
    Front seats Front seats The console box lid can be used as an armrest. Slide the box lid forward or backward to the desired position (if so equipped). 2nd row seat 2nd row seat Pu ...

    Rolling code device equipment programing
    Note: The assistance of a second person, may make the following steps quicker and easier. Once the button has been pressed there are only 30 seconds in which to complete Step 3. 1. At the garage ...