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 a half (1½) 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:
Exterior
Styling of the DTS is "more architectural and linear," said Gary Cowger,
former president of General Motors North America, during its initial appearance.
The new model's styling evokes C ...
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer.
See the warranty manual for
information regarding the tire
warranty and where to get
service. For additional ...
EPB Apply
The EPB can be applied any time the vehicle is stopped. The EPB is applied
by momentarily lifting up on the EPB switch. Once fully applied, the parking
brake status light will be on. While the brake ...






