Buick 2005 Century Owner's Manual page 287

8. Install the compact spare tire.
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.
9. Put the wheel nuts
back on with the
rounded end of the
nuts toward the wheel.
Tighten each nut by
hand until the wheel is
held against the hub.
10. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
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