51 13 401 Removing and installing/replacing handle strip (on tailgate) (Z3 coupe, M coupe): Installation:

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Secure seal (1) with beads (2) on handle trim (3).

Fig 1: Installing Seal With Beads On Handle Trim

Courtesy of BMW OF NORTH AMERICA, INC.