Had the car aligned prior to the last event, found out the rear camber and toe at both ends was not left-right symmetrical. Got the camber squared away, but the shop stayed within factory specs (communication problem), and I ended up with a little front toe-in and not enough rear toe-in. So, back to the shop (a good one) this week.
Lightweight wheels and yes, 315 rears, are also going on this week.
Talked to Bimmerworld about the MCS shocks. Nothing is in the works yet, but I certainly like their eagerness to please.
At the above-mentioned event I ran with the Power button "on" for the first time, for my last few runs. My E46 on street-grade tires was overwhelmed in that mode, so I had avoided using it with the E92 until I was acclimated to the car on R-compund tires. Bottom line: I think this car can use the quicker throttle response to advantage.
Rich, how are you mounting your camera?