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:
Problems with the rear window defroster
The rear window defroster has deactivated itself prematurely or cannot be activated.
Switch off any consumers that are not required, e.g. reading lamps or
interior lighting.
When the battery ...
Operating audio player or audio media
Audio data from various audio devices or media can be played, depending on the
equipment installed in the vehicle.
Switch on the audio system or COMAND and select the audio device or medium
( ...
Slippery road surfaces
WARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing poi ...