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 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:
DISTRONIC displays in thespeedometer
When DISTRONIC is activated, one or
two segments in the set speed range light up.
For design reasons, the speed displayed
in the speedometer may differ slightly from
the speed set for DISTRON ...
Important safety notes
If you fail to adapt your driving style, the
driving safety systems can neither reduce the
risk of accident nor override the laws of
physics. Driving safety systems are merely
aids designed to ...
Removing a wheel
Unscrew the wheel bolts.
Do not place wheel bolts in sand or on a dirty surface. The bolt and wheel
hub threads could otherwise be damaged when you screw them in.
Remove the wheel.
...