1995 Buick Century Owner's Manual - Page 197
1995 Buick Century Manual
Page 197 highlights
9. Place the spare on the wheel mounting surface. 10. Replace the wheel nuts with the rounded end of the nuts toward the wheel. Tighten each nut by hand until the wheel is held against thehub. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. Place the spare the wheel on mounting surface. 5-31