17" vs. 18" Wheels

Mazda RX7 and RX8 Suspension, Intakes, Headers, Exhaust, Shocks, Springs, Sway Bars, Brake Kits, Autocross and track mods.

Re: 17" vs. 18" Wheels

Postby Brian » Wed Aug 25, 2010 1:18 pm

It is a close choice between the Enkei RP-F1 17x9 45mm and the 18x9.5 45mm. That 17x9 is popular with track guys because it is significantly lighter than the 18x9.5 and keeps overall package weight down (lighter and better choice than that 17x8.5 too). The 18x9.5 lets you support a little more tire on the ground but with a little more weight. The choice comes back to what tracks you will run the most often? High speed tracks suggest the 17x9 is your best combo (least amount of aero drag and weight). But for tighter and slower tracks the extra support and grip of the 18x9.5 is my suggestion.
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Re: 17" vs. 18" Wheels

Postby tuberotor » Wed Aug 25, 2010 6:19 pm

Brian:
Does the 18 x 9.5 RPF-1, the 17.4 pounds special version, come in any other offsets (i.e. other than 45)?

Thanks.
04 Titanium RX-8 6-speed
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Re: 17" vs. 18" Wheels

Postby Brian » Wed Aug 25, 2010 6:38 pm

Nope.
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Re: 17" vs. 18" Wheels

Postby TheOtherRedMiata » Sun Jul 15, 2012 7:25 pm

I'm considering going with the 17x9 setup, what tire sizes are recommended for this?
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Re: 17" vs. 18" Wheels

Postby Brian » Fri Sep 07, 2012 6:50 am

Most guys run a 255mm wide tire on that.
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Re: 17" vs. 18" Wheels

Postby Brian » Tue Jul 14, 2015 11:51 am

Adding picture
Attachments
RX8-17x9s-.jpg
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