Quote:
Originally Posted by RobUK
+1
Road noise wouldn't come through the door panels for the most part, and wind noise would be down to the aerodynamics of the mirrors and door pillars, etc. - more of a design issue I'd say. I'm guessing the bottom pic shows soundproofing felt on a Merc door? (NB, felt only deals with certain frequencies). Can't really see what soundproofing materials are present inside the BMW door  |
Tech said there is couple of holder for sounddamping material like F10 but nothing in there. He said BMW putting it later sometimes.