Ideal adjustment, pretension

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Pretension can be checked with or without window cavity cover strip. Pretension is 1.0 mm greater with window cavity cover strip. Magnet in special tool 51 0 341 creates the correct door window glass pretension on the seal system for measurement. No force must be exerted on the door or door window glass during measurement.

Insert special tool 51 0 341 in rotary striker of door lock and close rotary striker manually. Carefully close door.

Fig 1: Identifying Magnet In Special Tool 51 0 341 On Seal System

Courtesy of BMW OF NORTH AMERICA, INC.

Measure gap (A) between side window glass (1) and inside edge of door window glass (2).

NOTE: Measuring point 10 mm below top edge of window glass.

With window cavity cover strip fitted (front and rear): A = 20 +1 mm

Without window cavity cover strip fitted (rear): A = 19 +1 mm

Fig 2: Measuring Gap Between Side Window Glass And Inside Edge Of Door Window Glass

Courtesy of BMW OF NORTH AMERICA, INC.