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Offset?


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#1 Seventy-Two

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Posted 29 April 2014 - 10:55 PM

Hey guys, so I don't really understand offset and I'm dreaming of new wheels.. I'm looking at 17x9 or 18x9's. Will they fit in the guards of a narrow body, and what would be a flush/fat offset?

Thanks.
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#2 Cuts

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Posted 29 April 2014 - 11:07 PM

To break it down.

Offset is the relation of the mounting face of the wheel compared to the centre point, it's always measured in mm.

 

So if the mounting face of a wheel was 4" from the rear lip (or front lip) on an 8" wheel then the offset would be 0 because it's exactly in the middle. 

 

Obviously what makes a flush fitment on a certain wheel changes with width, the narrower the wheel the more aggressive (that is to say the lower the offset) that is required to fill guards. To give you an idea I have 18x9.5" wheels all round on my 205 with +35 (front) and +32 (rear) for pretty well exactly flush fitment.

 

A narrow body 18x just won't swallow as wide a wheel 

http://www.willtheyfit.com/

 

That is a good web site that you can punch in your existing numbers and it will tell you final figures of: offset, inset (how close to the strut) and if you input the tyres what difference in rolling diameter and how it will effect the speedo.


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#3 Joshua

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Posted 30 April 2014 - 03:43 AM

^Very good explanation Cuts :)


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#4 Cuts

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Posted 30 April 2014 - 08:55 AM

Thank you sir


ST205 Group A Rallye, #61 of 77......350kw atw @ 23 psi on E85. http://www.ozcelica....up-a-rallye-61/
GRX133 Mark X 350s http://www.ozcelica....cuts-new-daily/
 

 


#5 sainz 47

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Posted 30 April 2014 - 05:19 PM

i notice your in ferntree gully and i have a spare set of 17 x 8 +35 you may try on .

you dont have to buy them you can see if they will fit.

let me know if you would like too.

pm me for details.




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#6 Seventy-Two

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Posted 30 April 2014 - 10:20 PM

That pretty much covered it Cuts, thanks heaps! :)

Sainz, I will take you up on that offer. Pm incoming.
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#7 st182er

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Posted 01 May 2014 - 09:50 AM

17x8 +35 may hit the strut on the rear.....from memory.


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#8 fiynix

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Posted 01 May 2014 - 11:07 AM

Hes got coilovers all round so hopefully they shouldnt hit.
Fingers crossed
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#9 st182er

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Posted 01 May 2014 - 12:30 PM

ive got coilovers all round too


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#10 sainz 47

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Posted 01 May 2014 - 12:32 PM

i dont have coilovers and they clear


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#11 sneaky184

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Posted 01 May 2014 - 04:50 PM

i've got cheap jdm ssr wheels for sale in the sales thread if keen

 

+35 will fit without issue


Edited by sneaky184, 01 May 2014 - 04:50 PM.


#12 Seventy-Two

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Posted 29 August 2014 - 10:48 PM

I'm going to try 18x9 +35, spacer on the back to bring it to +10, and a smaller spacer up front to run +30, possibly +25..

10368948_10152640239898954_1077244932286

This is the setup I'm looking at. I realize that it will poke and I'll have to run stupid stretched tyres and other dumb stance shit, but this is what I want. Can anyone see an issue with the fit?

And I know that I should be just getting the right offset and not running spacers but money is not infinite and my options are limited..

Edited by Seventy-Two, 29 August 2014 - 11:00 PM.

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#13 st182er

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Posted 29 August 2014 - 11:45 PM

fuark the rears will be hektic close to your strut?


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#14 Seventy-Two

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Posted 30 August 2014 - 10:34 AM

Shouldn't be a problem. The 17x7.5 +40s didn't hit the strut before I put the 25mm spacer in. Spaced out they're a +15, and 14mm back from that should be no issue.

Edited by Seventy-Two, 30 August 2014 - 10:39 AM.

1991 ST182 GT-R (Dump Truck) / GT-Four bonnet / BC Type BR Coilovers / Whiteline Strut Brace / Series II tail lights / More one day..




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