Surface Pre-Treatment
WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
Grind surface to a metallic bright-finish. The surface must be clean, dry and free from grease.
Clean the surface with a cleaning agent R1 and let it vent for 2-3 minutes.