Quote:
Originally Posted by john4444
While my interest is the forthcoming 6MT G80 M3, not the standard 3-series, I looked at the German G20 configurator to see what options are available elsewhere but not in the US. One is acoustic glass (Akustikverglasung) in the side windows (S03KA), priced at 200 Euros. It should not be difficult to order replacement windows from a European dealer and either install them yourself or have a glass technician install them.
The text on the bmw.de configurator translates to:
The acoustic glazing side windows supplement the standard acoustic glazing of the windscreen and significantly reduce the noise level for all occupants. They minimize airflow and environmental noise and noise from the engine, tires and windshield wipers. This is especially appreciated by music lovers or users of hands-free equipment.
A foil layer in the disc structure acoustically couples the outer and inner discs from each other. As a result, noises in the middle frequency range are effectively damped and the ambience in the vehicle gains in comfortable rest.
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My dealer says it makes a big difference in terms of silence on board.