Subaru Legacy: Treadwear - Uniform tire quality grading standards - Consumer information and Reporting safety defects - Subaru Legacy Owners ManualSubaru Legacy: 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 the 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 standards
    This information indicates the relative performance of passenger car tires in the area of treadwear, traction, and temperature resistance. This is to aid the consumer in making an informed choice ...

    Traction AA, A, B, 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 government ...

    See also:

    General information
    Adjusting the seat belt Seat belts should always be worn by all occupants of your vehicle. Children should be properly restrained, using an infant, car, or booster seat determined by age, weigh ...

    Programming Additional Transmitters
    Refer to Sentry Key “Customer Key Programming.” If you do not have a programmed RKE transmitter, contact your authorized dealer for details. ...

    To lock and unlock the trunk lid opener switch
    When you entrust your vehicle key to another person, you can lock the trunk lid opener switch to prevent items in the trunk from being stolen. To lock the trunk lid opener switch, perform the fol ...