MarkC4S said:One thing that surprises me about the 997 is the amount of tyre road noise in the cabin. My car has Bose, but frankly any HiFi would do against the background noise. Choice is the sound of motion (with the tyre and engine symphony) or stereo up very load, but how can that be a hifidelity sound worth paying huge sums for? But hey, each to their own.
Nice easy way to reduce road noise is some dynamat, or similar, and adhesive neoprene foam inside the rear panels, wheelarches and inside the rear body panels! Cuts down road/tyre noise a fair bit without spoiling the engine noise! Have also found that my Ohlins suspension has reduced tyre roar significantly at speed, surprising as it's a fair bit firmer now than stock!