Pontiac 2003 Montana Owner's Manual page 382

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 "Part A: Scheduled
Maintenance Services," in Section 6, for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.
Don't include the compact spare tire in vour tire rotation.
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the
Certificationflire label. Make certain that all wheel nuts
are properly tightened. See "Wheel Nut Torque"
under Capacities and Specifications on page 5-101.
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or
a
paper towel to do this; but be sure to use a
scraper or wire brush later, if you need to, to
get all the rust or dirt off. See "Changing a Flat
Tire" in the Index.
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