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 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:

Type A
1. Raise the wiper arm off the windshield. 1) Stopper 2. Remove the wiper blade assembly by holding its pivot area and pushing it in the direction shown by the arrow while depressing the wiper bla ...

General information
Noise from under the vehicle NOTE You may hear a noise from under the vehicle approximately 5 hours after the engine is turned off. However, this does not indicate a malfunction.

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