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:
More operating comfort, better connectivity: new-generation telematics
The new Mercedes-Benz C-Class also sees the debut of a new telematics
generation which will also be gradually introduced in other model series. Major
new features include greater operating conveni ...
Rear-end structure: side members with specifically graduated material
thicknesses
Multi-piece side members and a robust, flexible crossmember made from
ultra-high-strength steel form the key components of the rear-end structure. The
rear side members are continuous, closed box ...
Changing a wheel
Flat tire
The "Breakdown assistance" section contains information and notes
on how to deal with a flat tire. It also provides
instructions on changing a wheel or mounting
the spare wh ...