You are reading a single comment by @lynx and its replies.
Click here to read the full conversation.
-
No idea, just talking but I think in open cars wind noise is a factor as your head in in the air stream.
Proper race or rally cars with no sound deadening or material to stop vibration noise are loud. Like vans with or without headling, those without headling just amplify the sound as the sound bounces off the hard surface.
(straight) Pipes if car, wind if bike.