51 47... Removing and installing/replacing rear spare wheel well trim panel

Raise luggage compartment floor panel (1)

Remove expanding rivets (2) from rear spare wheel well trim panel (3).

Installation: 

Replace faulty expanding rivets (2).

Lift out rear panel of spare wheel well (3).

Fig 1: Identifying Luggage Compartment Floor Panel, Expanding Rivets And Spare Wheel Well

Courtesy of BMW OF NORTH AMERICA, INC.