Going with 18x10 with NT01 275/35's this fall. Narrow as possible to give sidewall a little preload and immediate steering response. Spacers vary with camber per specific track, 5-10mm
tbd
Thinking bout slicks down the line, understand will need to tighten things up significantly for that kind of setup- how stiff/what are you guys running for your suspensions when you throw hoosiers on?