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:
Return to Factory Settings
Select Return to Factory Settings to
return all of the vehicle
personalization to the default
settings. Turn the Menu knob to
select Yes or No. Press SELECT to
confirm and go back to the
l ...
Underbody Maintenance
Use plain water to flush dirt and
debris from the vehicle's underbody.
Your dealer or an underbody car
washing system can do this. If not
removed, rust and corrosion can
develop. ...
Vehicle Overview
Buick brings back one of its well-known nameplates — Regal — for its new
entry-luxury midsize sedan. Based on the Opel Insignia from Europe, the Regal
has a striking resemblance to that model. ...