R34 Gtt Wheel Offset Advice

[TanjuAydin]

ah k sweet. Well ive ordered them anyway I doubt any issues should arise. 

[Moshpit95]

Hey guys,

Looking at getting some of these late in the year, JDMconcept told me that this customer had the 18x9.0 +30 and 18x10 +38 but weren't sure on tyre size. Is the owner on here or anybody know what he would be running?

[Gazzaa]

57 minutes ago, Moshpit95 said:

Hey guys,

Looking at getting some of these late in the year, JDMconcept told me that this customer had the 18x9.0 +30 and 18x10 +38 but weren't sure on tyre size. Is the owner on here or anybody know what he would be running?

Looks like a 245/40 front and 265/35 rear

might be 255 rear but 265 should fit easy, could even probably work a half to full degree positive camber if you’re making some power to put to ground.

always best to check clearance to your suspension as that will be the deciding factor

[TanjuAydin]

I bought that specific set couple months ago for my 34. The tyres I went with where 235/40/18 on the front and 255/35/18 on the rear. Easily could go 265 on rear. I will say I dont think the offset is aggressive enough though. If I could go back I would get a more aggressive offset for the rear. 

[Gazzaa]

54 minutes ago, TanjuAydin said:

I bought that specific set couple months ago for my 34. The tyres I went with where 235/40/18 on the front and 255/35/18 on the rear. Easily could go 265 on rear. I will say I dont think the offset is aggressive enough though. If I could go back I would get a more aggressive offset for the rear. 

Agreed but I believe it is a fairly safe size if you want to mount fat tyres

the white r34 is probably running spacers.

to get that flush finish with some tyre stretch it’s best to use a 9.5 wide wheel with +15-20 offset. You can make a 235 stretch nicely and still fit a 255 at the back. Seems to be a fairly common size amongst most brands 

[Moshpit95]

16 hours ago, Gazzaa said:

Agreed but I believe it is a fairly safe size if you want to mount fat tyres

the white r34 is probably running spacers.

to get that flush finish with some tyre stretch it’s best to use a 9.5 wide wheel with +15-20 offset. You can make a 235 stretch nicely and still fit a 255 at the back. Seems to be a fairly common size amongst most brands 

Cheers, wanting as flush as possible but dont want to draw attention with them sitting outside the guards. Just went through 6 months of defect/engineering because the last wheels were too phat haha.

they were 9.5+15 all round and had 235's on them. 

Making ~305kw at the wheels so want some rubber on the back but doesn't have to be crazy.

Edited February 2, 2020 by Moshpit95

[Kinkstaah]

I have managed to fit 265's all round on 18x9 +30's on all 4. There's a ton of room for more rubber at the back, I have something like 35mm of inside clearance. Fronts are pretty tight, in a "Yeah you'll need to get it rolled/yeah you'd better think about relocating the loom under the driver side fender" kind of thing.

I used to have 18x9.5 +27 with a 265 there too, unsure as to which setup went through the plastic. Maybe both did, and maybe a 255/35/18 is a better idea on the front ?

[Moshpit95]

Yeah I've read that there is heaps of room up the back.

I just want to make sure the wheels will be flush if im dropping 2k+ on them haha, after scouring through forums all over the place I thought these were the answer. Guess Ill keep looking.

[R34NeoLover]

So im looking at getting rota p45f for the fronts and p45r2 for the rears, but i really don't know much about the offset choices, hopefully someone can help.

 

I am looking at getting the following rim and tyre sizes:

18x8.5 front with 245/40/18

18x9.5 rear with 265/35/18

The rota website only offers +28 offset for the fronts and either +12 +20 or +35 for the rears. I have bc br coilovers and i am lowered to the maximum legal height in Victoria. I'd like my wheels to sit just slightly inside the guards, not outside, as i use this car for track days. 

Would +28 for the fronts and +35 for the rears be ideal?

 

 

[Kinkstaah]

Yes.

The front will tuck 1mm more than a 9+30, rear will be +1mm pokey vs a 9+30, but people run 10+38 on the rear all the time (with is +4mm of poke in the same example vs 9+30)

They will fit. You will likely need to roll guards in order to fit them depending on how much tyre you want on said rims.

[niZmO_Man]

5 hours ago, R34NeoLover said:

Would +28 for the fronts and +35 for the rears be ideal?

I'd say so. Please post picture of fitted wheels for us to enjoy.

[Gazzaa]

This is a square set of 18x9.5j wide +20 offset.

235 tyre front, 255 tyre rear. 
rolled guards, no camber

 

[Adz2332]

any chance of 10.5 +30 fitting on the rear of a r34 sedan?

and 9.5 +23 front?

[Gazzaa]

6 hours ago, Adz2332 said:

any chance of 10.5 +30 fitting on the rear of a r34 sedan?

and 9.5 +23 front?

It will sit 2.5mm out more than the photos I posted above with the bronze work xt7’s

below is a couple more pics of my sedan with 18x9.5j +20 fronts, 235/40 tyre

18x10.5j +25 rears, 275/35 tyre.

as you can see the tyre is poking out a bit too much at the rears and caused scrubbing which resulted in me getting 2 degrees negative camber as opposed to 255/35 tyres which would be a better solution and also match the stretch on the front

[Kinkstaah]

16 hours ago, Adz2332 said:

any chance of 10.5 +30 fitting on the rear of a r34 sedan?

and 9.5 +23 front?

If you have a widebody, sure.

Both will sit out about 15-20mm from the guard.

[Peache07]

On 01/02/2020 at 6:44 PM, Moshpit95 said:

Hey guys,

Looking at getting some of these late in the year, JDMconcept told me that this customer had the 18x9.0 +30 and 18x10 +38 but weren't sure on tyre size. Is the owner on here or anybody know what he would be running?

I avoided getting the 10 inch rear because I wasn't comfortable risking having to roll my guards so I got a square setup of 18x9 +30 and put an extra 5mm slip on hub centric spacer on the rear

I reckon it needs just about 2mm more on the rear to be perfect

My tyres are square too at 245/40/18

Hopefully one of these pictures gives you an idea of fitment

[Kinkstaah]

That is bizarre. I have 18x9 +30 and I need rolls to clear..

Also the rear on the 34 pokes out more than the front. At least it does with the Sedan, perhaps the coupe IS different!

(I have 265 tyres on all 4)

[Peache07]

10 minutes ago, Kinkstaah said:

That is bizarre. I have 18x9 +30 and I need rolls to clear..

Also the rear on the 34 pokes out more than the front. At least it does with the Sedan, perhaps the coupe IS different!

(I have 265 tyres on all 4)

I'm at 340mm rear eyebrow height with no camber arms maybe that might have something to do with it?

[Kinkstaah]

Nope, my car is higher than yours too, and I have only -1.5 deg camber at the back - It could be tyres in my case.

Its worth mentioning that the rear pokes a good 10mm more than the front, for the same fitment which I found suprising! I could take pictures of how it sits, mind you its been out in the weather for a month now ?

[Gazzaa]

7 hours ago, Kinkstaah said:

That is bizarre. I have 18x9 +30 and I need rolls to clear..

Also the rear on the 34 pokes out more than the front. At least it does with the Sedan, perhaps the coupe IS different!

(I have 265 tyres on all 4)

Strange as the fronts definitely poked more from the guards when I was running 9.5j +20 square set up on my sedan. Pics above with the xt7’s should confirm.

must be difference in coil overs?