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OEM 17x7.5 + 10mm spacer ~= UltraSport 18x8 offset?

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Old 06-09-2005, 05:58 PM
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Default OEM 17x7.5 + 10mm spacer ~= UltraSport 18x8 offset?
Any props for H&R versus MTM?
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Old 06-09-2005, 06:11 PM
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Both seem to be nice. The MTM ones do come with the proper wheel bolts.
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Old 06-09-2005, 06:29 PM
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Default Well, price is one difference....
which is why I went the H&R route. Including longer wheel bolts, it's about $100 less than MTM. Best bet is to order thru PureMS--Mike Kim is a big help.

Also, since search is working again, I've previously posted the correct bolts for 10mm and 15mm spacers.
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Old 06-09-2005, 07:40 PM
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I thought Ultrasport wheels are ET43; if true they're only 2mm further out than sport wheels
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Old 06-09-2005, 07:44 PM
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.5" wider though.
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Old 06-09-2005, 07:46 PM
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Default Yes, but they are 8" versus 7.5", so .25" ~= 6mm
So by my math 6mm + 2mm = 8mm more offset than the stock 17x.5 rims.
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Old 06-09-2005, 07:51 PM
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I probably should not call it offset, more like "effective" offset
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Old 06-09-2005, 09:41 PM
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Default Ah, so you meant offset as in where the outside of the wheel is. Fair enough :)
I was just thinking about the "true" offset as in where the contact with the hub is.
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Old 06-10-2005, 04:45 AM
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Default They will stick 2mm further out and you will have 14mm more clearance behind the wheel.
UltraSport : 18x8", ET43

OEM : 17x7.5", ET45 + 10mm spacers = ET35

Plug in the numbers and voila...<a href="http://toy4two.home.mindspring.com/offset.html">Offset Calc</a>
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