Originally Posted by apw2607

You might want to change the Speed sensitive volume control for the radio following the procedue described here. YOu need to get into the service mode for the radio and adjust the GAL setting. This will certainly effect the radio/cd/sirius volume based on speed. It may effect the telephone volume, based on speed ... I'm not 100% sure.

http://www.bimmerboard.com/members/a...rvice_mode.pdf