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:

    Releasing the cargo net
    Seat belt reel holder behind the front seats ► Pull belt adjuster 1 upwards in the direction of the arrow to reduce the tension on the tensioning strap. ► Unhook belt hook 2 from car ...

    Power Steering Fluid
    The power steering fluid reservoir is located under the engine cover on the passenger side of the vehicle. See Engine Compartment Overview  for reservoir location. When to Check Power Steer ...

    High-beam headlamps
    ► Switch off the lights. ► Open the hood. ► Turn housing cover 1 counter-clockwise and pull it out. ► Turn bulb holder 2 counter-clockwise and pull it out. ► ...