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 (1- 1/2) times as
well on the government course as a tire graded 100. The rela
The most common causes of corrosion are:
1. The accumulation of moisture retaining dirt and debris in body panel sections,
cavities, and other areas.
2. Damage to paint and other protective coatings caused by gravel and stone chips
or minor accidents.
Corrosion is accelerated on the vehicle w