Adjusting pre-tension on rear window

In order to avoid wind noises, rear window (1) must be lower than roof outer skin (2).

Position special tool 51 0 010 in center of vehicle depending on dimension (A) and check underprotrusion of rear window (1).

A = 3.5 mm

X = measurement stages 1... 4 mm

Fig 1: Checking Rear Window Underprotrusion

Courtesy of BMW OF NORTH AMERICA, INC.