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:

    Lubricants
    Engine oil For the checking, adding and replacing procedure or other details, refer to “Engine oil” F11-12. NOTE The procedure for changing the engine oil and oil filter should be performed by ...

    Anti-entrapment function
    When the moonroof senses a substantial enough object trapped between its glass and the vehicle’s roof during closure, it automatically moves back to the fully open position and stops there. The anti-e ...

    Adverse safety consequences of under-inflation
    Driving at high speeds with excessively low tire pressures can cause the tires to flex severely and to rapidly become hot. A sharp increase in temperature could cause tread separation, and failure of ...