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:
If a Tire Goes Flat
It is unusual for a tire to blow out while driving, especially if the tires are
maintained properly. If air goes out of a tire, it is much more likely to leak out
slowly. But if there ever is a bl ...
Tires
Use a stiff brush with tire cleaner to clean the tires.
Notice: Using petroleum-based tire dressing products on the vehicle may damage
the paint finish and/or tires. When applying a tire dressing, ...
Steering, Suspension, and Chassis Components
Visually inspect front and rear suspension and steering system for damaged, loose,
or missing parts or signs of wear. Inspect power steering lines and hoses for proper
hook-up, binding, leaks, cra ...