Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and one-half (11/2) 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.
See also:
Activating
   
Activating
The High-beam Assistant can be activated 
when the low beams are switched on.
1. Turn the light switch to  or
.
2. Press the button on the turn signal lever, arrow.
The indicator  ...
   
Initializing after a power failure
   After a power failure during the opening or closing 
process, the roof can only be operated to a 
limited extent.
Initializing the system
The system can be initialized when the vehicle 
is statio ...
   
Fuel specifications
   Never use fuels labeled at the fuel pump as metal-containing.
 Do not use leaded gasoline or gasoline with 
metal-containing additives such as manganese or iron; doing so can cause permanent 
damag ...
   
