As I stated in another thread:
ASA lists the FN1, which I believe is the same a the ZR2 that tire rack carries, in a 18x10 with a 25 mm offset, slap some 295/35 BFG's, or even better 305/35 Mickey Thompson, and I think your traction problems will be solved. They are probably about $300 a pc then throw in the tires your looking around $1,200.