OP are you sure it's not just chatter? As I said before it's pretty normal on these cars as mine has been on the noisy side since the day I picked it up a year ago;
https://f87.bimmerpost.com/forums/sh....php?t=1478107
That said you shouldn't be feeling vibrations through the pedal so maybe there's something different going on with your car but if you aren't used to a noisy clutch this car takes a little getting used to.