Buick 2005 LeSabre Owner's Manual page 315

CAUTION:
{
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the 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
the 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.
10. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
11. Place the compact spare tire on the wheel-mounting
surface.
CAUTION:
{
Never use oil or grease on studs or nuts. If
you do, the nuts might come loose. Your wheel
could fall off, causing a serious accident.
12. Reinstall the wheel nuts
with the rounded end of
the nuts toward the
wheel. Make sure each
wheel stud is centered
in each wheel hole
while tightening the
nuts. Tighten each nut
by hand until the wheel
is held against the hub.
5-75