2005 Cadillac CTS Owner's Manual - Page 366

Storing a Flat or Spare Tire and Tools Use the following diagram as a guide for storing the compact spare tire in the trunk: {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've put the compact spare tire on your vehicle, you'll need to store the flat tire in your trunk. Remove the foam support so that the flat tire will fit in the storage area. Place the flat tire with the appearance-side face down and store the jack container in the center of the tire. See the diagram for more information. The compact spare is for temporary use only. Replace the compact spare tire with a full-size tire as soon as you can. A. Compact Spare Tire Cover Wing Nut B. Compact Spare Tire Cover C. Plastic Wing Nut D. Retainer E. Jack Container with Wheel Wrench and Jack F. Flat Road Tire G. Compact Spare Tire H. Foam Insert I. Bolt J. Wheel Wrench K. Jack L. Jack Container 5-86