I've been running PSCups tires on my car for about 14 months and I just ordered a set of the PSS (in 265/18 and 285/18) as I haven't had time to get out to the track nearly as much as I used to. I'm really looking forward to giving a thorough review on them.
2007 GT3 Clubsport w/CGT buckets in Scotland
2003 CSL, SG, Alcon BBK SOLD
2002 M5, SSII/Blk and bone stock. In storage back home in TX
2008 M3, AW/Blk 6MT, lots of track stuff SOLD