Another point to consider is what the MDM is doing with your brakes during a track run.
At Lightning this pass year, I was running with another M3 at the same speed for the last 5 + minutes on the track before we both came in. His brakes were steaming hot and mine were fine. He said he was running with MDM on and every tight turn, he could see the little light flashing a bit. I was running DSC off and if a little slippage occurred in some turns, that was what I was used to ( natural reactions being built up).
The point is that you are going to work your brakes more with MDM on than with them off, even if "you" don't touch your brakes.
2011 e92 M3 Monte Carlo Blue ESS 535
2010 Honda FIT
2006 SLK 55 AMG