I recently got a 135i and I LOVE it - except for the radio. I got the car mainly for track events - high speed DE's and autocross, so spent my money on active steering and paddle shifters. So, I went with the basic radio system. I am not an audio-phile, but I hate this radio. The variable volume is driving me crazy. Variable volume - you know, where the volume goes down as you let up on the accelerator. Is there anyway to turn this feature off completely? If I turn it off completely, will it disable the mute aspect when I have a phone call? Thanks!