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:

    Fuel Additives
    To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control syste ...

    Crash-responsive EASY-EXIT feature
    If the crash-responsive EASY-EXIT feature is triggered in an accident, the steering column will move upwards when the driver's door is opened. This occurs irrespective of the position of the SmartK ...

    Setting memory function
    The status of the following settings can be linked to the Intelligent Key and the memorized settings can be available for each Intelligent Key. ► Air conditioner system► Navigation ...