I know nothing about wheels, or suspension. Everything I have is stock on my 98 CSVT. If that helps. I want to get Enkei RS5 18x7 rims...I guess what I am asking is what tire size would be best. Sorry for the confusion.

98 Black CSVT Indiglo Gauges, including HVAC, KKM Intake Exhaust: Brullen loud system with 4" tips, Moddified stock Y-pipe Sound System: Alpine 9815 Deck, Alpine SPX-177A comps, 2 Lambda 12" subs.