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 wheels
WARNING
Do not use power washers with circular-jet
nozzles (dirt grinders) to clean your vehicle, in
particular the tires. You could otherwise
damage the tires and cause an accident. ...
Problems with the windshield wipers
The windshield wipers are obstructed
Leaves or snow, for example, may be obstructing the windshield wiper movement.
The wiper motor has been deactivated.
For safety reasons, you should remove t ...
Optional Features
A number of packages and individual options are available for the GLK350. The
Premium Package bundles a number of features, including a panoramic moonroof,
power liftgate, a memory feature, Sirius ...