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18" Wheels For An R32 Gt-R

shodan
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shodan Enthusiast

shodan

Posted
Posted

Hi All,

I'm in the process of purchasing my very own 'zilla, and I really need some help with wheel size selection as I'm getting some rims made to spec.

I've read quite a bit on here and other forums, and I think I have a reasonable idea of what I want/need.

This car will be for street use, and I'd like the rims and tyres to sit *just* inside the guards, or maybe flush, but definitely not proud of the guards. At this stage I don't want to roll or lip the guards.

I would like to run 18x9.5 or 18x10 all round with un-stretched tyres, so I'm just trying to determine what combination of rim size and offset would achieve the desired stance. From what I've read of similarly-configured R32s, I think the offset needs to be about +20 - +30.

For reference the suspension includes HKS Hipermax coilovers & Noltec adjustable front upper control arms, brake rotors are DBA 4000 with standard calipers, also equipped with a Tomei HICAS lock.

Cheers!

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(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

I know 18 x 10 +22 will sit flush (Directly under your guards) with some negative camber.

A friend of mine has BBS wheels in that size with HKS Hipermax coilovers and looks great.

No guard work needed as he has just lowered it till there is no wheel arch gap.

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

Thanks Hank and Skyline,

It sounds like I need 18x9.5 with +15 offset, 'cos I want to keep camber neutral.

Am I right in saying that to move the wheels further inside the guards, I would need to increase the amount of offset?

Yes, the higher the offset, the further the wheels sit in.

18 x 9.5 +15 will sit nice.

Since 18 x 10 is half an inch wider, it will poke out just a tad, so you have to raise the offset to +22 to make it sit back in flush again.

offsetdiagram1.jpg

offsetdiagram2.jpg

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

Skyline you are a scholar, and possibly a gentleman too :D

Thanks for your help, I'll be sure to post pics when the car is finally in my possession and sporting the new footwear.

Cheers!

All good :D

But, if you can, test fit the wheels before buying them.

Always, to see how they look and fit and go from there, before buying them.

shodan Enthusiast

shodan

Posted
  • Author
Posted

All good :D

But, if you can, test fit the wheels before buying them.

Always, to see how they look and fit and go from there, before buying them.

Hmm might be hard considering I need to pay a deposit for ADV to start the build...

offsetdiagram1o.jpg

wheeloffset1.gif

Useful! Thanks again..

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

Hmm might be hard considering I need to pay a deposit for ADV to start the build...

Useful! Thanks again..

Ah I see, haha!

Also check out GTR - Owners Club UK, those fella's seem to have an idea and is quiet a good site, mainly for GTR's.

Or Google search:

This came up on Nissan Slivia.com

R32GTR.jpg

18 x 9.5 +12 = Looks flush to me.

An inch or two lower at the front and it'd be even better.

shodan Enthusiast

shodan

Posted
  • Author
Posted

Also check out GTR - Owners Club UK, those fella's seem to have an idea and is quiet a good site, mainly for GTR's.

GTROC UK is pretty good actually, they've got a large 'show us ya wheels' thread there too...

This came up on Nissan Slivia.com

18 x 9.5 +12 = Looks flush to me.

An inch or two lower at the front and it'd be even better.

Yes those Kais look pretty good with the +12 offset.

It's confusing and hard to judge because I've seen quite a few cars with similar wheel specs. So I guess the variations are all due to the varying ride heights, suspension setups and tyres..

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

GTROC UK is pretty good actually, they've got a large 'show us ya wheels' thread there too...

Yeah man, best go there and use them as samples to see what looks best.

Yes those Kais look pretty good with the +12 offset.

It's confusing and hard to judge because I've seen quite a few cars with similar wheel specs. So I guess the variations are all due to the varying ride heights, suspension setups and tyres..

Or if the guards are rolled / lipped / flared.

If you stick to the 18 x 9.5 +12 / +15 or around about that fitment, you'd still get something good.

Ronin 09 Grand Master

Ronin 09

Posted
Posted

+22 is the "correct" fit.

I've read a lot that +12 will be fine on a 18x9.5 rim, BUT there are many suspension factors that affect fit. On a stock lowered car +12 might be fine. But when you start playing with camber and caster and aftermarket suspension arms, it all goes out the window.

I have 18x9 +30 R34 GTR rims, and if I add the quarter inch plus 18mm I get the outside of the rim sitting 24mm further out. On the rears of my 32 GTR, given my suspension settings (and other factors such as 3piece rotors with a thicker alloy hat pushing out the hubs marginally), this will protrude the wheel outside the guard. Now I could tip some more -ve camber but it is set up to handle, not to fit a set of wheels in. So unless I want to compromise the suspension set up, +12s will be too wide.

On the front, the +12s will fit fine in terms of not protruding from the guard. However, as I have a stack of caster, the front wheels are further forward in the wheel arches than stock. Therefore as you turn the wheels, the outside edge of the tyre/wheel catches the front of the inner guard. If you increase the offset, this will mean the wheel will contact the inner guard with even less lock applied. So again, I don't want to change the suspension geometry to fit wheels, I'd rather get the right fit wheels to work with the suspension set up that is currently set up for handling.

hope that helps.

shodan Enthusiast

shodan

Posted
  • Author
Posted

+22 is the "correct" fit.

I've read a lot that +12 will be fine on a 18x9.5 rim, BUT there are many suspension factors that affect fit. On a stock lowered car +12 might be fine. But when you start playing with camber and caster and aftermarket suspension arms, it all goes out the window.

I have 18x9 +30 R34 GTR rims, and if I add the quarter inch plus 18mm I get the outside of the rim sitting 24mm further out. On the rears of my 32 GTR, given my suspension settings (and other factors such as 3piece rotors with a thicker alloy hat pushing out the hubs marginally), this will protrude the wheel outside the guard. Now I could tip some more -ve camber but it is set up to handle, not to fit a set of wheels in. So unless I want to compromise the suspension set up, +12s will be too wide.

On the front, the +12s will fit fine in terms of not protruding from the guard. However, as I have a stack of caster, the front wheels are further forward in the wheel arches than stock. Therefore as you turn the wheels, the outside edge of the tyre/wheel catches the front of the inner guard. If you increase the offset, this will mean the wheel will contact the inner guard with even less lock applied. So again, I don't want to change the suspension geometry to fit wheels, I'd rather get the right fit wheels to work with the suspension set up that is currently set up for handling.

hope that helps.

Thanks for taking the time to add that info Ronin, definitely helps clarify and confirm my thinking.

So for the time being I believe I need +22, possibly up to +25 like the 18x9.5 Bee-R wheels.. but I won't really know until I take delivery of the car, and have the opportunity to test-fit some wheels with the same specs.

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