4.0 Anti-Corrosion Paste
WARNING: This page does not describe the selected car, but rather 259 other vehicles, including the 2006 BMW Z4, 2006 BMW X5, 2006 BMW X3, 2006 BMW M6, and 2006 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
Apply small amounts of Plastilube paste evenly around the centering cone of the alloy wheel rim and onto the contact areas of the brake hub.
Plastilube BMW Part No. 81 22 9 407 103.