Not that this will mean anything, I compiled the following information from Tire Rack site to do a simple study. %diff is based on numbers provided on 91'-93' factory NSX tire diameter of 23.1" front and 24.9" rear published on NSX Prime FAQ:
Bridgestone Potenza S-03 Pole Position
225/40YR18 Fd: 25" %diff: 8.23%
275/35YR19 Rd: 26.6" %diff: 6.83%
Net %diff: 1.4%
225/40YR18 Fd: 25" %diff: 8.23%
285/30YR19 Rd: 25.7" %diff: 3.21%
Net %diff: 5.02% (Out of range)
Continental Sport Contact 2
225/35ZR18 Fd: 24.1" %diff: 4.33%
275/30ZR19 RD: 25.5" %diff: 2.41%
Net %diff: 1.92%
225/35ZR18 Fd: 24.1" %diff: 4.33%
285/35ZR19 Rd: 27" %diff: 8.43%
Net %diff: -4.10% (Borderline)
225/35ZR18 Fd: 24.1" %diff: 4.33%
295/30ZR19 Rd: 25.9" %diff: 25.9%
Net %diff: 0.31%
235/40ZR18 Fd: 25.6" %diff: 10.82%
285/35ZR19 Rd: 27" %diff: 8.43%
Net %diff: -2.39%
Dunlop SP Sport 9000
225/40ZR18 Fd: 25.1" %diff: 8.66%
275/35ZR19 Rd: 26.7" %diff: 7.23%
Net %diff: -1.43%
225/40ZR18 Fd: 25.1" %diff: 8.66%
285/30ZR19 Rd: 15.9" %diff: 4.02%
Net %diff: -4.64% (Borderline)
Michelin Pilot Sport PS2
225/35YR18 Fd: 24.2" %diff: 4.76%
275/30YR19 Rd: 25.6" %diff: 3.21%
Net %diff: -1.95%
225/35YR18 Fd: 24.2" %diff: 4.76%
285/30YR19 Rd: 25.8" %diff: 3.61%
Net %diff: -1.15%
225/35YR18 Fd: 24.2" %diff: 4.76%
295/30YR19 Rd: 26" %diff: 4.42%
Net %diff: -0.34%
Michelin Pilot Sport A/S
225/40YR18 Fd: 25" %diff: 8.23%
275/35YR19 Rd: 26.6" %diff: 6.38%
Net %diff: -1.40%
225/40YR18 Fd: 25" %diff: 8.23%
285/30YR19 Rd: 25.8" %diff: 3.61%
Net %diff: -4.62% (Borderline)
Pirelli Pzero Rosso Asimmetrico
225/40YR18 Fd: 25.1" %diff: 8.66%
275/35YR19 Rd: 26.6" %diff: 6.83%
Net %diff: -1.83%
225/40YR18 Fd: 25.1" %diff: 8.66%
285/35YR19 Rd: 27.1" %diff: 8.84%
Net %diff: 0.18%
225/40YR18 Fd: 25.1" %diff: 8.66%
295/30YR19 Rd: 26.1" %diff: 4.82%
Net %diff: -3.84%
235/40YR18 Fd: 25.2" %diff: 9.09%
275/35YR19 Rd: 26.6" %diff: 6.83%
Net %diff: -2.26%
235/40YR18 Fd: 25.2" %diff: 9.09%
285/35YR19 Rd: 27.1" %diff: 8.84%
Net %diff: -0.25%
235/40YR18 Fd: 25.2" %diff: 9.09%
295/30YR19 Rd: 26.1" %diff: 4.82%
Net %diff: -4.27% (Borderline)
Yokohama AVS Sport
225/40ZR18 Fd: 25.2" %diff: 9.09%
285/40ZR19 Rd: 27.9" %diff: 12.05%
Net %diff: 2.96%
225/40YR18 Fd: 25.2" %diff: 9.09%
295/35YR19 Rd: 27.1" %diff: 8.84%
Net %diff: -0.25%
235/40YR18 Fd: 25.4" %diff: 9.96%
295/35YR19 Rd: 27.1" %diff: 8.84%
Net %diff: -1.12%
Hope you find these information entertaining.
Paul Siu
Disclaimer: The above are raw data copied from a third source. I do not have any first hand experience on the proper fitment of these tires on any model year NSX. Improper fitment of these tires may adversely affect the performance and safety of your vehicle. Furthermore, I will not be responsible for the accuracy of the above data. Above information are provided as a source of interest only.