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 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:
Tire size designation, load-bearing capacity and speed rating
1 Tire width
2 Nominal aspect ratio in %
3 Tire code
4 Rim diameter
5 Load bearing index
6 Speed rating
Tire data is vehicle-specific
and may
deviate from the data in the example.
Genera ...
Speed rating
The speed rating is part of the tire
identification. It specifies the speed range for
which the tire is approved. ...
"Minispare" emergency spare wheel/
collapsible spare wheel
Opening the stowage well
Sedan: the emergency spare wheel can be
found in the stowage well under the trunk
floor.
•► Lift the trunk floor upwards
Example: well insert
•► Release ...