Adjusting cavity dimension, fixed door window glass
WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
Slacken screw (1) and twist adjusting screw (2) to adjust window cavity gap.
Tighten screw (1).
Tightening torque 51 35 6AZ .
Check window cavity gap, repeat operations if necessary.