|
03-08-2010, 03:45 PM
|
#312
|
Lieutenant Colonel 
Drives: 2010 135i,1989 PRO3,2001 530i
Join Date: Aug 2009
Location: Portland,OR
|
yep, the sound does settle a bit in the 2200-3000k rpm range, definitely NO drone. Does not inhibit stereo or passanger/phone usage. I love it so much....
|
|
|
|