17x9 63 offset

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grey_NC
Posts: 147
Joined: Mon May 26, 2008 1:27 am

17x9 63 offset

Post by grey_NC »

I saw noticed 949racing will have a new 6ulr wheel coming out and there will be a 17x9 with 63 offset s2000 fitment...Is it possible to fit that onto a 06 mx-5?
skeeler
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Emilio's Answer

Post by skeeler »

I asked this same question on the 6UL question thread over at Miata.net:
Emilio,

I notice from your web site that you are planning a couple of 17-inch, 5-lug 6ULRs specifically for the S2000:

I know the NC uses the 5x114 bolt pattern, but with offsets in the range of +45 or +50 mm for widths of 6.5 and 7 inches. Do you happen to know if the 17-inchers will fit on an NC? If not, would you consider offering 17x9 or 17x10 wheels in NC-compatible widths?
Here's the answer from Emilio, owner of 949:
The S2K wheel will not fit anything but an S2K, that's precisely why no one makes them but Rays in $600 forged wheels. We will be able to use the 17x9 tool to make a +45~+55 offset version that will probably fit the NC and a few other cars. Eventually, we'll have a separate medium offset 17 tool with a slightly bigger lip to fit STI, RX8, NC, Mustang and some European cars. We'll also do lower offset 17" wheel in the +20~+35 for the 350/370Z, G35, Evo et.al
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So, the short answer is "no," but there is a NC-compatible 6ULR in the pipeline.

Michael
2009, STR & DD. 1995, HPDE. 2004 MSM, sold. 2010 Mazda3, hers.
Brian
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Post by Brian »

Hmm...I think that will prove to be too far inside....and here is my thinking. We know that 48mm is about perfect for 235/40/17...evenly clears inside and out. We also know that if we use a 45mm 18x9.5 for CSP guys rolling fender lips that this clears the inside with 285/30/18 using a Kumho...but can rub springs with Hoosiers in the same size...even when using narrow race spring coilovers. That's part of the reason our SM2 racer moved to 38mm for the rear fitment. And, given these fitments, no surprise that our customers running 45mm 17x9 with 245/40 are only clearing inside by roughly 20mm. The proposed 63mm about wipes out that 20mm of clearance and my rough calculation is that the proposed 63mm offset means roughly zero to 2mm clearance for a 245/40 tire.. I conclude rubbing is very possible with 63mm offset depending on setup, camber settings, etc. Rolling fender lips is easy...moving metal and suspension bits on the inside is not.
Brian Goodwin
Good-Win Racing
www.good-win-racing.com
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