Since 2008, I've tried H&R, Dinan, Moton Street Sport, Moton Club Sport. This will be my 5th system in preparation for NASA Time Trail, so I wanted to do things the 'proper' way.
As I have a full data system on my car as well as access to MSR Houston, I decided to do a true apple-to-apple comparison -- same car, same modifications, same track, and same driver... the only thing that's changed is the suspension.
2008 E92 M3 DCT
Yokohama AD08 265/35 & 295/30
CCW C14 Forged Wheels 18x9.5 & 18x10.5
Rear Seats Delete
StopTech BBK ST-60 & ST-40