51 46 050 Removing And Installing/Replacing Top Trim On Rear Apron

Open/take out luggage compartment floor trim panel.

Release expansion rivets (1).

Release trim upwards from clips (2) and feed out.

Installation: 

If necessary, replace faulty expansion rivets (1) and clips (2).

Make sure seal for rear lid is correctly seated.

Fig 1: Identifying Expansion Rivets And Clips

Courtesy of BMW OF NORTH AMERICA, INC.