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:
Customer Assistance
Offices (U.S. and Canada)
Cadillac encourages customers
to call the toll-free number for
assistance. However, if a customer
wishes to write or e-mail Cadillac,
the letter should be addressed to:
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Tire Rotation
Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule
.
Tires are rotated to achieve a uniform wear for all tires. The first rotation
is the most important.
Any time ...
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