Two problems related to side/rear glass have been reported for the 1997 BMW 750. The most recently reported issues are listed below.
The lamination or insulation in the double pane door glass breaks down over time causing the glass to cloud up. The clouding is so severe that it is no longer possible to see through the glass in areas where the couding exists. This presents a serious safety issue. The clouding will start along the top edge and caorners of the door glass and work inward until eventually one cannot see through the window. The window glass is likely defective.
1997 750il BMW. Consumer states the driver side front and back windows are double glazed. The film between the two sheets of glass is delaminating. Windows are turning white and creating a blind spot.