FYI, I put the APEX ARC-8s 18"x10" square on my '09 Silverstone II coupe, with Dinan springs, camber plates and mounts, Dunlop Direzza Star Spec 275/35-18s square, with no rubbing:
M3 with new wheels and tires by
dcstep, on Flickr
IMG_0267_DxO7D by
dcstep, on Flickr
New Dunlop Derizza Stat Spec tire tread by
dcstep, on Flickr
There is a very small issue with the DSC being a little confused. In agressive street driving I'm feeling the DSC touch the inside rear brake lightly when the rear end has not broken loose. Maybe the change in offset or slight change in rolling diameter has the computer's little brain confused. In "normal" driving I don't notice it at all and when I autocross I'll turn the DSC off. I consider it a very minor problem for me, but if you like to track with the DSC on, then it could be unsettling.
Dave