GMC savana 2001 用户手册

Tires should be rotated every 6,000 to 8,000 miles 
(10 000 to 13 000 km). Any time you notice unusual
wear, rotate your tires as soon as possible and check
wheel alignment. Also check for damaged tires or
wheels. See “When It’s Time for New Tires” and
“Wheel Replacement” later in this section for more
information. Make sure the spare tire is stored securely.
Push, pull, and then try to rotate or turn the tire. If it
moves, use the ratchet to tighten the cable. See “Storing
a Flat or Spare Tire and Tools” in the Index. If your
vehicle has dual rear wheels, also see “Dual Tire
Operation” later in this section.

The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services” in the Index for scheduled
rotation intervals.

If your vehicle has single rear wheels, always use one of
the correct rotation patterns shown here when rotating
your tires.