U.S. models
The scheduled maintenance items required
to be serviced at regular intervals
are shown in the “Warranty and Maintenance
Booklet”. For details, read the
separate “Warranty and Maintenance
Booklet”...
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...