I have to chime in, as I had a pair for a year or two on the 2006 M roadster. In town(or a parking garage
) these things are the bomb. Love them more than my Eisenmans because of the popping and burbling. Brings a smile everytime but the highway cruising was annoying. Almost embarrassing since you cant talk to the passenger w/o raising your voice. Stereo? yea right. Had to crank it up. The Eisenmanns are a perfect balance although I miss the popping a little
And all this was in a top up roadster. I cant imagine a coupe. But alas I miss the hell out of them and wish I had a dump switch as I would get another pair in a heartbeat. Also the tips dont stick out far enough for me. They get longer when hot but they still are a little short. My two cents