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.

    See also:

    2011 Subaru Impreza WRX STi review
    Driving the 2011 Subaru Impreza WRX STi transported me to a world that was completely foreign. It's a world that's less centered on booster seats and storage cubbies and more focused on rally raci ...

    Removing air intake duct
    Use a screwdriver to undo the clips on the air intake duct, then remove the air intake duct. Refer to “Type A clips” F11-5. ...

    Cargo tray (if equipped)
    The cargo tray is provided to protect the cargo area carpet. This cargo tray is removable to facilitate easy clean up. Clean with a cloth when necessary using mild soap and water. It is importa ...