51 23... Adjusting/replacing bump stops

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Necessary preliminary tasks:

Remove luggage compartment wheel arch panel. See REMOVING LEFT LUGGAGE COMPARTMENT WHEEL ARCH PANEL or REMOVING RIGHT LUGGAGE COMPARTMENT WHEEL ARCH PANEL .

The following parts must not be damaged:

(1) Bump stop
(2) Lock nut (Fig 2)

Fig 1: Identifying Bump Stop
Courtesy of BMW OF NORTH AMERICA, INC.

General view of rear side:

Adjust stop pads
Remove cap (1).

Adjust stop pad to correct height by turning screw (2) to left or right.
Remove stop pads
Release nut (3) and remove stop pads.

Fig 2: Identifying Bump Stop, Cap, Screw And Nut
Courtesy of BMW OF NORTH AMERICA, INC.