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:

    Cleaning the seat belts
      Use clean, lukewarm water and soap solution. Do not clean the seat belts using chemical cleaning agents. Do not dry the seat belts by warming them above 176 °F (80 °C) or placing th ...

    Service menu
    In the Serv. menu you can:  - call up display messages  - restart the tire pressure loss warning system (Canada only) Rcheck the tire pressure electronically  - call up the ...

    Washing by hand
    In some countries, washing by hand is only allowed at specially equipped washing bays. Observe the legal requirements in all countries concerned.   Do not use hot water and do not wash the ...