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 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:
Jacking And Tire Changing
WARNING!
• Do not attempt to change a tire on the side of the
vehicle close to moving traffic. Pull far enough off
the road to avoid the danger of being hit when
operating the jack or changi ...
Economy
Improper inflation pressures can cause uneven wear patterns to develop across
the tire tread. These abnormal wear patterns will reduce tread life resulting in
a need for earlier tire replacement. ...
Fluid Level Check – Brake Master Cylinder
The fluid level of the master cylinder should be checked
when performing under the hood service, or immediately
if the brake system warning lamp indicates system
failure.
The brake master cylin ...