1998 Pontiac Grand Prix Owner's Manual - Page 271

Storing the Spare Tireand Tools I A CAUTION: Storing a jack, a tire or other equipment in the passenger compartmentof the vehicle could cause injury.In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. The compact spareis for temporary use only. Replace the compact spare tire with full-size tire as soon as you a in When storing a full-size tire, you must use the extension can. See "Compact Spare Tire" the Index. See the storage instructions label replace your compact spare to to help avoid wheel surface damage. Use extension the in your trunk properly. and protectodguide locatedin foam holder. To store a full-size tire, place the tire valve stem facing down, with protector/guide through a wheel bolt hole, remove the protector and attach the retainer securely. When reinstalling the compact spare, put the protectodguide back in the foam holder. Store the cover asforward far as possible. 5-36