Rotor, thanks. Well, today I drove 25 miles or so on various road types with front at 13 and rear at 15, and I thought it felt perfect. Will be interesting to see after tomorrow when I get on the ARC-8 wheels and Michelin PSS. Look out Sebastien Vettel. Hah!
Mods-Etc: Quaife LSD w/VAC finned diff cover, M3 Rear SF Bushings, M3 sways & OEM Susp Front/Rear Cmpnt Kits ('cept strut brace), GC Caster/Camber Plates, AC Schnitzer M3 Sport Springs, JRZ RS1 dampers, JBD 100%, Goodrich SS brake lines, non-stggrd APEX ARC-8 18" wheels with Nitto Motivo tires (winter OEM 17" wheels and Blizzak LM-25).