The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat, when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance, which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel, than the minimum required by law.
WARNING!
The temperature grade for this tire is established for a tire that is properly
inflated and not overloaded.
Excessive speed, under-inflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
See also:
Set date (Date Adjustm.)
To correct the date (year - month - day ) proceed as follows:
...
Heating/climate control system
Version with central dashboard unit
A - Fixed side vents - B - Adjustable side outlets - C - Fixed upper vent - D
- Fixed central vent - E - Lower vents
Version with central tunnel unit
A - F ...
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 ...