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Discussion Starter #1 (Edited)
Please read the notes at the bottom for posting guideline

FAQs go here:

1. Q: What is factory wheel size and offset on sport models?
A: Front is (RWD or AWD 19x9 +47 245/40/19) and the rear is (RWD 19x9.5 +50 265/35/19...AWD 19x9 +47 245/40/19)

2. Q: My rims are 19x9.5 +35 all around what's a good tire size to run with these specs? Also on BC coils and plan on slamming it any issues i'll run into?
A: 255/40/19 or 245/40/19. You may be able to get away with 265/35/19. The clearance limiter is going to be your rear fender at a +35.

Hyperlinks go here:
17"

18"
Square 18x9.5 +40 255/45/18 RWD NON RS
Square 18x9.5 +45 275/40/18 AWD NON RS
Square 18x9.5 +40 275/40/18 RWD NON RS
Square 18x9.5 +40 275/40/18 AWD NON RS BUT Enkei USA confirmed fitment for Akebono

19"
Square 19x9.5 +40 265/35/19 AWD RS
Square 19x9.5 +40 275/35/19 AWD RS
Staggered/Square 19x11 +45 285/30/19, 19x11 +45 305/30/19 RWD RS
Square 19x9.5 +25 255/35/19 AWD RS
Staggered 19x8.5 + 40 245/40/19, 19x9.5 +35 275/35/19 Non Sport
Staggered 19x9.5 +19 235/35/19, 19x10.5 +22 255/35/19 RWD very aggressive camber


20"
Staggered 20x9.5 +36 255/35/20, 20x10.5 +42 285/30/20 RWD RS
Part 1 Staggered 20x9 +40 255/35/20, 20x10 +40 275/35/20 RWD RS
Part 2 Staggered 20x9 +40 255/35/20, 20x10 +40 275/35/20 RWD RS
Square 20x10 +40 275/30/20 AWD NON RS
Staggered 20x8.5 245/35/20, 20x10.5 275/30/20 2014 Luxe
Staggered 20x9 +35 245/35/20, 20x10.5 +45 285/30/20 RWD RS



Recommended Camber settings for balance:
RWD

AWD
Q50 AWD with RSR coilovers and factory anti-sway bars
square 265/35/19 with a -2.2 Front camber should have between -1.8 and -2.0 camber in the Rear...NOT VERIFIED
(Note: A -1.1 front camber does not mean the rear would be between -0.9 and -1.0. You must figure out the proper balance independently)

Q50 AWD with RSR coilovers and factory anti-sway bars
square 275/35/19 with a -2.2 Front camber should have a -2.2 camber in the Rear...VERIFIED
(Note: A -1.1 front camber does not mean the rear would be -1.1. You must figure out the proper balance independently)


Posting Guideline:
To get the ball rolling. I will update this first post with hyperlinks to all useful posts.

This thread is not for random comments.

Please post the following:
wheel diameter
wheel width
wheel offset
wheel weight
tire size
camber settings

While wheel make and model may not be very important, tire make and model may affect fitment as some tires run wider or narrower depending on manufacturer. You are more than welcome to post wheel make and model.

Feel free to add wheel and tire weights if you have that information handy.

Here is a useful example:
19x9.5 +40 265/35/19
wheels 20#
tires 27#

Please include pictures. This is very useful.

If you have a video, great...please add the link.

If you have a FAQ you want listed here, please post it with the answer...hopefully.

All comments/suggestions/answers welcome.
 

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Model: Q50 RWD RS

Wheel:
•Work
•VSTX
•Size Staggered:
20x9.5 et +36 (Front)
20x10.5 et +42 (Rear)

Tire:
•Michelin
•PS4S
•Size Staggered:
255/35R20 (Front)
285/30R20 (Rear)

Suspension:
•RSR Down Sus
•1-1.2” all around

Any modification: N/A

And Pictures:




Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk
 

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Discussion Starter #3 (Edited)
First off...thanks to OTW Z-Boy and especially q50adix on suggesting Nismo wheels

2018 Q50 RS AWD (19x9 +47 30# factory wheels)
2015+ Nismo Z wheels (19x9.5 +40 20#)
265/35/19 Michelin Pilot 4S now RE71R...same fitment
RSR coilovers
Camber between -1.7 and -2.4 until I add SPC control arums and adjust (now -2.2 all around but video is old)
No fender mods

Note: I can't tell enough people to just run this setup...until I find a better one. RSR are the best coilovers I can get for the AWD at the moment. The Nismo Z wheels, well, they just look fantastic. I am not a fan of the michelins 4S and changed to Bridgestone RE71R.

Video says "nismo" centercaps, but I have Nissan centercaps on there now.

 

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Model: Q50 RWD RS

Wheel:
•Work
•VSTX
•Size Staggered:
20x9.5 et +36 (Front)
20x10.5 et +42 (Rear)

Tire:
•Michelin
•PS4S
•Size Staggered:
255/35R20 (Front)
285/30R20 (Rear)

Suspension:
•RSR Down Sus
•1-1.2” all around

Any modification: N/A

And Pictures:




Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk
Hey man any rubbing in the rear with the 285/30/20. I currently run 275/35/20 and was contemplating going to a 285/30/20 on a 20X10 rear. Any thoughts?
 

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Saving a post. Will post my fitment tomorrow after alignment. Here's the specs for now (this doesn't rub, I can confirm, I just want to get an alignment before finalizing):

Wheel specs (squared setup, so all the same):

Vossen VFS2 Mid-concavity
Diameter: 19"
Width: 11"
Offset: +45
Weight: Around 27lbs (the FedEx slip showed 32lbs with full packaging which is roughly 5 lbs).

Tire specs:

Front: 285/30/19 Pirelli PZero Nero
Rear: 305/30/19 Michelin Pilot Sport PS2 N2s (911 Turbo cars)

Camber:

Fronts: Still stock, no camber adjustment possible
Rears: Driver side -2.1, passenger side -2.5. This was the max possible on either side. Not sure why we couldn't push drivers side more.

Any fitment issues?


Rear tires will rub on hard dips, but they rub on the inside of the fender, not on the lip so there's no risk of damage.
 

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Discussion Starter #6
Hey man any rubbing in the rear with the 285/30/20. I currently run 275/35/20 and was contemplating going to a 285/30/20 on a 20X10 rear. Any thoughts?
Bullitt: Please post your fitment or give me a link. I would like to add it.

I am on 265/35/19 +40 and want to go 275/35/19, but I think it is awful close at +40. He is running a 285 at a +42 which makes me think I can get away with a 275 +40.

Thought?
 

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Bullitt: Please post your fitment or give me a link. I would like to add it.

I am on 265/35/19 +40 and want to go 275/35/19, but I think it is awful close at +40. He is running a 285 at a +42 which makes me think I can get away with a 275 +40.

Thought?
So the website says the 20X10’s I have are a +20 offset. Personally the whole offset thing isn’t my specialty but here’s a calculator if that helps. On a side note I ran 275/35/19 on my Red Sport wheels before my 20’s. You’ll be fine if it’s the stock red sport setup.

https://tiresize.com/wheel-offset-calculator/

Brand: Avant Garde
Model: M310
Partnumber: M310-FB520201020
Color: Matte Black
Backspacing: 6.29
Offset: +20
Wheelsize: 20
Wheelwidth: 10
Hubbore: 72.56
Wheel Exposed Lugs: Yes
Wheel Material: Alloy
Wheel Structure: One Piece
Wheel Spoke Number: 7
Wheel Style: Mesh
Bolt Patterns: 5x120 5x120
Other Colors:
Matte Black
Hypersilver
 

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Discussion Starter #8 (Edited)
Bullitt: You most likely have the wrong offset and absolutely the wrong bolt pattern.

I will "fish" your posts for your original post.

Edit: The only information I was able to find before you got your wheels and tires is that your offset, as you said, "Offset is 40 it looks like."
https://www.infinitiq50.org/forum/wheels-tires-brakes-suspension/107993-19-q50-wheels-should-i-get-4.html#post1326449

So, a +40 sounds better than a +20 for your fitment. And, I guarantee you your bolt patter in 5x114.3.

The offset would be stamped on the inside of your wheel if it was a "production" wheel. Not sure if you are going to find a stamp on your custom wheels.

I can't find an original posting for your wheels and tires. If you know where it is, please let me know.
 

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Hey man any rubbing in the rear with the 285/30/20. I currently run 275/35/20 and was contemplating going to a 285/30/20 on a 20X10 rear. Any thoughts?


Hiya, no rubbing at all but I don’t drive it over speed bumps or lane markers. Just kidding.

It’s tight but I don’t think about it at all. I’d say you’d be fine depending on the offset?


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Discussion Starter #10
Boxy: You are RWD, correct?
 

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Bullitt: You most likely have the wrong offset and absolutely the wrong bolt pattern.

I will "fish" your posts for your original post.

Edit: The only information I was able to find before you got your wheels and tires is that your offset, as you said, "Offset is 40 it looks like."
https://www.infinitiq50.org/forum/wheels-tires-brakes-suspension/107993-19-q50-wheels-should-i-get-4.html#post1326449

So, a +40 sounds better than a +20 for your fitment. And, I guarantee you your bolt patter in 5x114.3.

The offset would be stamped on the inside of your wheel if it was a "production" wheel. Not sure if you are going to find a stamp on your custom wheels.

I can't find an original posting for your wheels and tires. If you know where it is, please let me know.
You are correct I went to the website and thought I had the right ones. The bolt pattern is definitely 5x114.3 and it looks like the offset is +40. These are my wheels attached below.

Regardless I had 275/35/19 on the rear previously. I added the 275 to the OEM red sport wheel without issue. I’m trying to see if 285/30/20 will rub on my current wheel. On a side note just ordered my walbro 485 in tank pump; rear sway bar and ethonal sensor kit.

https://www.google.com/shopping/product/1?q=avant+garde+wheels+5x114.3&client=safari&sa=X&hl=en-us&biw=768&bih=922&tbs=cat:6090,vw:l,init_ar:SgVKAwjKL0oHsgQECOHTIA==,ss:44&prmd=sinv&prds=num:1,epd:18003299761073624352,paur:ClkAsKraX6abak46NmgjVLHRc75qG7ei0rdpBv84iqfjaidWvVmM2z70iAFaESto9IQ1yegUE-K__jBWeNnHgZcRVJQ3woVoBqDvKJLEN-8n_mPa0dKmEep7WhIZAFPVH73BBof5AsgKXb0R6BWHZ5nSHQaxDA,prmr:1,pid:18003299761073624352,cs:1&ved=0ahUKEwio4Mb9n7LfAhVSd6wKHffOCpMQgjYIugY
 

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Hey man any rubbing in the rear with the 285/30/20. I currently run 275/35/20 and was contemplating going to a 285/30/20 on a 20X10 rear. Any thoughts?
They will fit. You know you’d be losing a full inch in diameter, right?
 

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I've read some posts about camber. Why exactly do people change their camber? Do you have it changed sometimes to make a wheel/tire set fit? Do tire installers do this or do you have to pay for an alignment and have them adjust it? Do some people change it for looks or cornering advantage?


One of those questions has to dumb I'm guessing :)
 

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I’d say yes to pretty much all of that.

Variety of reasons to do with performance form or function...

I wouldn’t advise this:


But then again if it makes you happy go for it.


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Really never should have been running the 275/35 20 that would have been “taller” than OEM


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I always felt taller would give me better bite from a dig and ride quality. No?
 

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They will fit. You know you’d be losing a full inch in diameter, right?
I did not, like I said I’m not a tires guy. How’s that if there larger then the 275/20 I’m running now? It’s the same offset +40? I’m currently running 275/35/20 and thinking of running 285/30/20? I’ll probably end up with 275/30/20 nitro nt555 g2
 

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I did not, like I said I’m not a tires guy. How’s that if there larger then the 275/20 I’m running now? It’s the same offset +40? I’m currently running 275/35/20 and thinking of running 285/30/20? I’ll probably end up with 275/30/20 nitro nt555 g2
285= 285mm
30= 30% of the width = 85.5mm sidewall height x2 = 171mm = approx 6.6”
20= 20” rim diameter
Total of 26.6”

275= 275mm
35= 35% of width = 96.25mm x2 = 192.5mm = approx 7.6”
20= 20” rim diameter
Total of 27.6”
 

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Soaking up some great knowledge already. Woohooo!
 
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