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:
Important safety notes
The rear view camera is an optical parking and
maneuvering aid. It shows the area behind
your vehicle with guide lines in the COMAND
display.
WARNING
Make sure that no persons or animals are ...
Checking tire pressure electronically
Make sure that the SmartKey is in position
2 in the ignition lock.
Press the or
button on the
steering wheel to select the Service
menu.
Press the or
button to select
Tire Pressure. ...
Cleaning the trailer tow hitch
The ball coupling must be cleaned if it becomes dirty or corroded.
Remove rust on the ball of the ball coupling, e.g. with a wire brush.
Remove dirt with a clean, lint-free cloth or a brush.
A ...