Ideal setting in the longitudinal direction (rear window glass, fixed)
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.
Measure distance (A) from the C-pillar cover (2) or the side window to the fixed rear door window (1).
Distance (A):
A = 4.7 ± 0, 8 mm with C-pillar cover (2)
A = 10 mm without C-pillar cover (2)