I did the BMW driving experience advanced 1 yesterday at Phillip Island. The cars used were M4, M3, 240i and 140i.
It was a great course and had a great time.
They had a few M2's there but they only use them for the advance 2 course. One of the M2's had the performance exhaust. One of the instructors started it for me to listen to. sounded great. A bit too loud though.