I've been doing some wheel/tire/suspension research myself and came across this guy on talk. 17x9 +45 on 255/40/17. On the rear he's running spacers to bump the offset to +37. He's running spacers up front too, but it doesn't say the size. I think that's about the perfect fitment.
FYI, he's on GC coilovers and Koni Yellows.
