Tread wear

The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. Government test course. For example, a tire graded 150 would wear one and one-half 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 conditions.

    See also:

    Driving systems
    Problem Possible causes/consequences and Solutions The red distance warning lamp lights up while the vehicle is in motion. A warning tone also sounds. R ...

    Extending/retracting from the driver's seat
    Make sure that the roller sunblind can move freely. Otherwise, the roller sunblind or other objects could be damaged. At temperatures below -4 °F (-20 °C), the roller sunblind cannot be operat ...

    Creating new contacts/changing contacts
    In certain countries, this function stops being available from a vehicle speed of more than approximately 3 mph (5 km/h). As soon as the speed falls below approximately 2 mph (3 km/h), the f ...