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:

    Limitations of use
    The DATABASE is restricted for use in the specific system for which it was created. Except to the extent explicitly permitted by mandatory applicable laws, you may not extract or re-utilize substa ...

    Emergency call
    Important safety notes A license agreement must exist in order to activate the mbrace service. Ensure that your system is activated and ready for use, and press the MB Info call button to re ...

    Instrument cluster
    Selecting the unit of measurement for distance This function is only available in Canada. The Display unit Speedometer/ Odometer function allows you to choose whether certain displays appear in ...