51 36 047 Replacing trim on rear left or right door window (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.

Treatment of adhesive area on side window:

Clean with spirit
Air drying time at least 2 minutes
Apply a thin coat of glass primer 205/5 or Sika bonding agent 205/5 (sourcing reference: BMW Parts Service)
Air drying time at least 2 minutes

Detach liner (3) (protective film on adhesive tape)

Fig 1: Installing Trim
Courtesy of BMW OF NORTH AMERICA, INC.
Align trim (2) on door window and, applying firm thumb pressure, press trim down over entire adhesive area
Wipe off remnants of glass primer or bonding agent with a dry cloth otherwise spots will appear on the door window