R Compounds or NT05?
you said these are going on original wheels, so i assume these will be track only tires? are you going to drive to the track on these said track tires? if so, then definetely no r-comps, unless you live VERY close to a track. although the highest performance track tire that you can drive on for a short while is NT01s. though you might get 10-15K miles out of them, if that. less if you drive and race. but, they are quite expensive. the 555rII, NT05, or falken 615 would all make excellent track tires, with 615s being probably the cheapest.
275/40/18s here. HP+ fronts and NT05s otherwise stock...






