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.

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    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: United States Cadilla ...

    When to Check
    Check the tires once a month or more. Do not forget the spare tire. See Full-Size Spare Tire   for additional information. ...

    Memory Features
    On vehicles with the memory feature, the “1” and “2” buttons on the outboard side of the driver seat are used to manually save and recall the positions of the driver seat, outside mirrors, and a ...