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Offset and wheels for '90 mx-5
Posted: Thu Jun 19, 2014 1:36 pm
by BossMX5
Hi guys i was planning to get a set of SSR professors sp1 for my mx5.
And wanted to get your opinions on fitment. Can i run a staggered setup and what is the max width i can get. 9's in the back and 8.5s in the front?
Since stock is +40 all round. what offset can i play around with? I want the wheels to be out just a bit.
Thanks
Re: Offset and wheels for '90 mx-5
Posted: Thu Jun 19, 2014 2:58 pm
by plohl
check out this dude
Miata offset info
Re: Offset and wheels for '90 mx-5
Posted: Thu Jun 19, 2014 3:05 pm
by Jeo
Fit is a pretty relative term.
Get a tape measure and measure yourself?
Re: Offset and wheels for '90 mx-5
Posted: Tue Jun 24, 2014 12:05 am
by Tumbles
Quite sure you can only run maximum 7" width in front and rear legally, without engineering certificate.
Not sure if staggered setup for an FR does any wonders with an MX-5 performance wise. It should only add weight if you're stock.
Re: Offset and wheels for '90 mx-5
Posted: Tue Jun 24, 2014 12:17 am
by plohl
^nope. Check the NCOP. It's pretty clear. Max rim width is based on a percentage increase of stock tyre width.
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Re: Offset and wheels for '90 mx-5
Posted: Tue Jun 24, 2014 6:12 am
by sailaholic
Staggered with more rear rim/tire will generally increase understeer.
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Re: Offset and wheels for '90 mx-5
Posted: Mon Jun 30, 2014 11:39 pm
by Tumbles
plohl wrote:^nope. Check the NCOP. It's pretty clear. Max rim width is based on a percentage increase of stock tyre width.
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http://www.rms.nsw.gov.au/registration/ ... 9_rev4.pdf26mm=1 inch, and the NA MX-5's largest optional width was 6 inches right?
Offset and wheels for '90 mx-5
Posted: Tue Jul 01, 2014 8:04 am
by sailaholic
That is a 2003 document. New Code Of Practise (NCOP) for light vehicle modifications has since been introduced.
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Re: Offset and wheels for '90 mx-5
Posted: Tue Jul 01, 2014 9:49 am
by plohl
A quick search and it looks like that might be that current legislation in NSW. Not surprising there is a National document that is not used nationally
anyway,
some further references to check.
http://www.infrastructure.gov.au/roads/vehicle_regulation/bulletin/vsb_ncop.aspxhttp://www.rms.nsw.gov.au/registration/downloads/vsi/vsi6.pdfProbably the best thing to do is call up the RTA and ask them, or email.
This is a good reference too.
http://www.onsills.com/OS2012/phpBB3/viewtopic.php?f=5&t=2523 Props to the dudes efforts.