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:

    When required to leave the vehicle’s key with a parking attendant
    Lock the glove box as circumstances demand. Vehicles without a smart key system: Carry the master key for your own use and provide the attendant with the valet key. Vehicles with a smart key syste ...

    Glove box
    Open the glove box by pulling the handle. Use the mechanical key when locking (1) or unlocking (2)- the glove box. WARNING: Keep glove box lid closed while driving to help prevent injury in an a ...

    Locking doors
    1. Place the ignition switch in the LOCK position. 2. Close all doors. 3. Press the button on the Intelligent Key. 4. The hazard warning lights flash twice and the horn beeps once. 5. All d ...