I have PSS run flats, and although I have no other frame of reference since these came on the car, they perform a lot better than what I've read. It almost seems like they are too sticky for the suspension. I get significant body roll on off-camber turns and the dreaded rubber band effect but the tires stick and stick. When they do start to go it's a progressive loss of grip even without dsc on.
I also have not experienced any rubbing with 235/40/18 and 265/35/18 and Dinan stage 1 suspension.