Surface Preparation

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 335xi, 2010 BMW 335i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

For better adhesion, remove oxide film and paint from the adhesive areas with a stainless steel wire brush or special sandpaper.
Clean bonding surfaces with cleaning agent R1.
Allow cleaned surfaces to dry for approx. 5 minutes.
Bonding surfaces must be completely dry.