2011 Buick Lucern Owner's Manual - Page 382

Storing a Flat or Spare Tire and Tools To store the compact spare tire and tools: { WARNING: 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 need to store the flat tire in your trunk. Store the flat tire as far forward in the trunk as possible. Store the jack and wheel wrench in their compartment in the trunk. For storage, the jack lift head must be raised until the screw end is even with the edge of the compartment. 6-96