I'm considering a 2006 M Coupe as a weekend and track car. I'm an instructor for BMW CCA, PCA, and various other organizations, but the only cars I've tracked have been Mazdas - a Spec Miata I race in SCCA and NASA, and a 3rd gen RX7 that was a street legal track car. I've sold the RX7 and am now looking for something to take its place. I've driven the M Coupe on a test drive on public streets, and have instructed a student in one, as well. It has some nice torque down low and responsive steering, though the suspension feels a little soft, even in "Sport" mode. Are there any specific issues with this car for serious track use? Other than a roll bar, harnesses, and brake pads, any other upgrades I'll need, such as brake ducting, stiffer front roll bar, lowering springs, etc? Any comments on handling in stock configuration? When you turn the DSC off, is it really off? All comments welcome. Thanks.