Recently forum fellow ///Nordschleife mounted PSS on his 19" BBS CH-R rims: 255/35 R19 front | 275/35 R19 rear (instead of 245/35 R19 front | 265/35 R19 rear).
He told me he's very pleased with it. Lots of grip (dry and wet). Significant difference with PS2. Like many of us, also his 1M got the front fender liners upgrade (
http://www.1addicts.com/forums/showthread.php?t=682196): only minimal contact/rubbing at full lock with the 255/35 R19 front wheels.
Any others have experiences with a PSS 255/275 setup ?