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 (11⁄2) 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:
Identifying components in the engine compartment
1. Engine coolant reservoir
2. Power steering fluid reservoir
3. Brake fluid reservoir
4. Battery
5. Power distribution box
6. Air filter assembly
7. Transmission fluid dipstick
8. Eng ...
Maintenance product specifications and capacities
...
Additional information contained on the tire sidewall for “LT” type tires
“LT” type tires have some additional
information beyond those of “P”
type tires; these differences are
described below.
Note: Tire Quality Grades do not
apply to this type of tire.
1. LT: ...
