Originally Posted by jtuds
Would be nice if each picture tols us what we're looking at and gave us a comparison between what's good and why this is bad.
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