RE-11s will be my next street tire after I wear out the PS2's this weekend. I have them on the 2002 M3 and they are fabulous.
I thought the PSS had a pretty soft sidewall, which makes them great on the street but not quite as good at 9/10ths on the track.
'11 E90 M3, Mebourne/Black/Fox Red/Black, 6MT, roof, PP2, heated seats, moonroof, split folding rear seats, iPod/USB adapter -- 8/8/11 euro delivery! Technic harness, JL XD 6/600.