Steve,

my street wheels are WELD racing forgds aluminum I bought from another forum member
tires are Bridgestone Potenza SO4 275 35 X 18 out front & 305 30 X 19 on the rear slight spacers to clear calipers NO RUBBING ISSUES although the rear brake duct is very close
On track I run 10.5 X 18 speed lines and 315 X 30 Hoosiers at all corners. This is a great set up as recommended by Phoenix performance

Per your comment on the T1 bars, what size tires do you run? Is your car lowered? Someone recommended running 305/35 Nittos square, but they scuff all over. My car was lowered about 15mm, but I raised it back up about 6 turns, still scuffs. I'll go with 30 series tires next time, want to lower it again--it handles better. Curious about your tried and true set up. Thanks, Steve