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I see your wheel sizes (18x9.5 +22 front, 18x10.5 +12 rear) but not tire sizes.

Wow that looks great! What are the tire sizes?

I'm stock height. Any pics of your car with the 18's? If the RPF1s don't fit well then I'm leaning towards Gram Lights with the same sizes as yours.

Thanks again for your insight. I'm looking at these sizes: Front 245/45/18 Rear 275/40/18 I emailed Z1 for their recommendation for tire sizes, just waiting for response.

Thanks, those are the same numbers I got using the provided links above. So they'll sit pretty flush with the fenders? It's storming here right now so I can't go measure.

Thanks for these links, playing around with the calculations now.

Hi Everyone, I previously owned a 350Z and 370Z with factory 19" wheel/tire sizes and now looking to stay with 18" for my Z Sport (not opposed to 19" though). Looking at a set black RPF1 on Z1's site and see 18x9.5 +15 (Front) 18x10.5 +15 (Rear). How well would these fit on our cars? Thanks!