Pontiac 2005 Grand Prix Owner's Manual page 382

To store a full-size tire, do the following:
1. Place the tire in the trunk with the valve stem facing
down, and the protector/guide placed through a
wheel bolt hole.
2. Remove the protector and attach the retainer
securely.
3. Place the protector/guide back in the foam holder
when putting the compact spare back in the trunk.
Store the cover as far forward as possible.
The compact spare tire is for temporary use only.
Replace the compact spare tire with a full-size tire as
soon as possible. See Compact Spare Tire on
page 5-93. See the storage instructions label on the
trunk lid to properly position the compact spare tire
in the trunk.
5-92
A. Retainer
B. Cover
C. Compact Spare Tire
D. Nut
E. Jack
F. Wheel Wrench
G. Extension and
Protective Guide
H. Foam Holder
I. Bolt Screw