Rim size for aftermarket brakes help

[latch5]

I have put Brakeman 13" rotor/caliper on my 2005 GT. Ease to calculate if a rim will clear the rotor - problem is the caliper is thick (1.25" from rotor).
Currentlt have to use a 3/8" spacer on bothe my 17" stock rims (track tires) and 18X9" ADR rims to keep caliper away grom the spokes. Currently looking for 17X9 or 9.5" rims for track use. Looking at Eneki RPF1 (mostly because of weight). No vender wants to guarantee fitment for any size rim. Can anyone provide some help on back space/offset combos?

 

[stkjock]

the issue you're going to have is more then offset and BS. it'll really depend on how the wheel is cut more then OS or BS

have you compared the brakes you have to the Brembos on the GT500s as to the size?