Yeah around 70%. But to be honest, have been driving quite a few miles now and it doesn't seem to bad.
New things I've discovered, The car seems to make quiet a few clunking sounds when changing gears. Very difficult to describe. I will try and get a sound recording.
Isn't this button suppose to tell you the set cruising speed digitally when pressed? It did on my 335i but on the M3 it doesn't do anything.