51 31... Instructions on gluing windscreen: General:

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The windscreen and rear window (also the rear side windows if necessary) are bonded to the body. This gluing will increase the torsional strength of the vehicle. To obtain perfect bonding, comply with the installation procedure described in the following.

It is possible to tow or drive without windscreen or rear window.

The windscreen must be secured with yellow plastic adhesive tape (sourcing reference: BMW Parts Service) after being installed. The paint must be completely hardened after painting work.

Set down window glass and process on BMW-approved X-universal stand.
In winter, the vehicles must stand in a room with a temperature of at least 15 °C.