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 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:
“Temperature unit” (Temp. Unit)
To select temperature unit (°C or °F), proceed as follows:
...
Cigar lighter
Press button (A) with ignition key at MAR.
After approx. 15 seconds it will return to its initial position and is ready
for use.
IMPORTANT Always check that the cigar lighter has turned off.
IM ...
Rubber hoses
As far as the brake system and fuel rubber hoses are concerned, carefully follow
the “Service schedule” in this section.
Indeed ozone, high temperatures and prolonged lack of fluid in the system ma ...