Buick 2006 LaCrosse Owner's Manual page 359

When rotating your tires, always use the correct rotation
pattern shown here.
Do not include the compact spare tire in your tire rotation.
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the Tire and
Loading Information label.
Make certain that all wheel nuts are properly tightened.
See "Wheel Nut Torque" under Capacities and
Specifications on page 5-98.
CAUTION:
{
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 needed, to get
all the rust or dirt off. See Changing a Flat
Tire on page 5-73.
5-65