Cadillac 2008 CTS - Manual (Page 392)

Storing a Flat or Spare Tire
and Tools
{ CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone.
Store all these in the proper place.
After you have put the compact spare tire on your
vehicle, you will need to store the flat tire in your trunk.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon
as you can.
Use the following diagram as a guide for storing the
compact spare tire in the trunk:
A. Wing Nut
B. Compact Spare
Tire or Flat Tire
(valve stem down)
C. Jack
D. Wheel Wrench
E. Extension
F. Strap
5-110