Temperature – A, B, C
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 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, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.
See also:
Under the Hood
Base models get a 200-horsepower, 2.5-liter four-cylinder engine with direct
injection. A 270-hp, turbo 2.0-liter four-cylinder will be optional, as will
Cadillac's familiar 318-hp, 3.6-liter V-6. ...
Inst (Instantaneous) Economy
Displays the current fuel economy
in either liters per 100 kilometers
(L/100 km) or miles per gallon
(mpg). This number changes
frequently as driving conditions
change. It cannot be reset. ...
Safety Chains
Always attach chains between the vehicle and the trailer. Cross the safety chains
under the tongue of the trailer to help prevent the tongue from contacting the road
if it becomes separated from t ...