View Single Post
      02-29-2008, 08:28 PM   #3
swamp2
Lieutenant General
swamp2's Avatar
United_States
214
Rep
10,201
Posts

 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (1)

I have seen specs/results for interior noise at various cruising speeds. However it seems like you are interested in exterior noise from the exhaust. BMW tests this and has the information but I doubt they will release it. I haven't seen such info in mag tests either. So... good luck.