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:
Safety guidelines for seat belts, Emergency Tensioning Devices (ETDs) and
air bags
WARNING
• Damaged seat belts or seat belts that have
been subjected to stress in an accident
must be replaced. Their anchoring points
must also be checked. Only use seat belts
installed or ...
Refrigerant of the air-conditioning system
The air-conditioning system is filled with R134a refrigerant and a special PAG
lubricant.
Never use refrigerant R 12 (CFC) or mineral lubricants. Otherwise, you could
damage the air-conditioni ...
Qualified specialist workshop
An authorized Mercedes-Benz Center is a qualified specialist workshop. It has
the necessary specialist knowledge, tools and qualifications to correctly carry
out the work required on your vehicle. ...