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2015 Q50s Hybrid AWD: Z1 2 piece rotors, Stillen rear Sway-bar, Tanabe front strut bar
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Hey Jo, I’ambfinally about to pull the trigger on either the Nismo wheels or the sport pac rays 19X 9. I noticed the Nismo wheels come with the same size tire from factory as the redsport. 245/40/19. Any disadvantage to running the oem size on such a wider wheel? Stretch? I think that size is at its limit at 9.5??

I would like a wider tire being at stock height, just afraid of rubbing but don’t Want to go down in diameter because I am a stock height, I don’t want the wheel gap to be too noticeable.

This is why I was considering the OEM Rey wheels at 9 inches wide because they are the closest to factory and I am on the 2015 sport wheels which are only 8.5 inches wide.

I also read initially that you had struggled with too much grip on the 275 tire and my vehicle is all wheel drive and I stock height I’m wondering if I will run into any similar issues.
Your feedback is greatly appreciated thank you so much

you can not have a 275 square fitment with +32. You will rub.

I am at 275 +40 and the rears barely...just barely clear at full compression at outside corner of tire.
 

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Discussion Starter #502
Hey Jo, I’ambfinally about to pull the trigger on either the Nismo wheels or the sport pac rays 19X 9. I noticed the Nismo wheels come with the same size tire from factory as the redsport. 245/40/19. Any disadvantage to running the oem size on such a wider wheel? Stretch? I think that size is at its limit at 9.5??

I would like a wider tire being at stock height, just afraid of rubbing but don’t Want to go down in diameter because I am a stock height, I don’t want the wheel gap to be too noticeable.

This is why I was considering the OEM Rey wheels at 9 inches wide because they are the closest to factory and I am on the 2015 sport wheels which are only 8.5 inches wide.

I also read initially that you had struggled with too much grip on the 275 tire and my vehicle is all wheel drive and I stock height I’m wondering if I will run into any similar issues.
Your feedback is greatly appreciated thank you so much
The "too much grip" was with RE71R. Inam running indy 500 275s amd it is fine.

The RE71R has a softer compound, wears fast, grips phenomenally. I may end up going back to it.

You should have zero...that is zero...issues with a 275 square fitment on the nismo 19x9.5 +40 wheels...especially with a tire that has a UTQG of 300+. Those tires have a slightly rounded shoulder.
 

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2015 Q50s Hybrid AWD: Z1 2 piece rotors, Stillen rear Sway-bar, Tanabe front strut bar
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The "too much grip" was with RE71R. Inam running indy 500 275s amd it is fine.

The RE71R has a softer compound, wears fast, grips phenomenally. I may end up going back to it.

You should have zero...that is zero...issues with a 275 square fitment on the nismo 19x9.5 +40 wheels...especially with a tire that has a UTQG of 300+. Those tires have a slightly rounded shoulder.
Im actually considering the Indy 500s due to price and reviews, would you recommend something else? I was looking at Continental Sports or Pirellis also, Keep in mind I am AWD. However, now I do feel sold on the Nismos again especially since I have a hybrid. Need to get the most out of a wheel upgrade as possible since mods are limited for this platform.
Few last things, would running the oem tire size on the nismos be too stretched? The tires look kind of round on a Z and I like the idea of a more square fit. Which ever is going to handle as close to stock or better. Would more of a sidewall cause excess flex in turns? What load range to choose also has me scratching my head Lol
thanks again!! I’ll post pics when I get the wheels and tires, all your posts and YouTube vids had me on the fence for months.
 

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Discussion Starter #504
Im actually considering the Indy 500s due to price and reviews, would you recommend something else? I was looking at Continental Sports or Pirellis also, Keep in mind I am AWD. However, now I do feel sold on the Nismos again especially since I have a hybrid. Need to get the most out of a wheel upgrade as possible since mods are limited for this platform.
Few last things, would running the oem tire size on the nismos be too stretched? The tires look kind of round on a Z and I like the idea of a more square fit. Which ever is going to handle as close to stock or better. Would more of a sidewall cause excess flex in turns? What load range to choose also has me scratching my head Lol
thanks again!! I’ll post pics when I get the wheels and tires, all your posts and YouTube vids had me on the fence for months.
I talked about all of your concerns in previous posts.

If you get a tire with a soft sidewall, it will be sloppy.

Michelins have soft sidewalls. Continentals have soft sidewalls.

if you run those tires you need a little stretch.

Sport Cup 2 has a stiffer sidewall than sport 4S...obviously. But RE71R has stiffer sidewall than sport cup 2.

indy 500 has a stiffer sidewall than the pilot sport 4S.

I can tell you this because I have compared the 4S, sport cup 2, indy 500 and RE71R. I have had all but sport cup 2 on my AWD RS.
 

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Odd setup?
Front
Advant Garde 235/35/R19
Rear
Advant Garde 275/30/ZR19

I have no idea what all that other stuff is, took to tire garage today, he said a positive offset, the rest made no sense to me. He did order me a new wheel to replace the bent one.
 

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Odd setup?
Front
Advant Garde 235/35/R19
Rear
Advant Garde 275/30/ZR19

I have no idea what all that other stuff is, took to tire garage today, he said a positive offset, the rest made no sense to me. He did order me a new wheel to replace the bent one.
Front tire size looks whack. Rear size looks correct. Do 245/40r19 oem size on the front of 255/4019
 

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Front tire size looks whack. Rear size looks correct. Do 245/40r19 oem size on the front of 255/4019
After reading you reply, I double checked the front tire size, it is 235/35/R19. Once the front rim is replaced, I plan on getting new tires. I’ll be triple checking the correct size.
 

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Sorry I read most of this thread but I'm not 100% sure. Is a stock RS RWD with a 50 Offset on front and back? The lower the number, the further away from the suspension?

I'm looking at some staggered 19x8.5 and 19x10 with an offset of 20 each. I'm trying to figure this out so I can order the correct wheels for the Black Friday/ Cyber Monday price.
 

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Sorry I read most of this thread but I'm not 100% sure. Is a stock RS RWD with a 50 Offset on front and back? The lower the number, the further away from the suspension?

I'm looking at some staggered 19x8.5 and 19x10 with an offset of 20 each. I'm trying to figure this out so I can order the correct wheels for the Black Friday/ Cyber Monday price.
If you want a flush look go with 45-40 offset rear and around 32-33 offset front
 

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Sorry I read most of this thread but I'm not 100% sure. Is a stock RS RWD with a 50 Offset on front and back? The lower the number, the further away from the suspension?

I'm looking at some staggered 19x8.5 and 19x10 with an offset of 20 each. I'm trying to figure this out so I can order the correct wheels for the Black Friday/ Cyber Monday price.
I believe the stock offset for OEM wheels is on the front page.

You can definitely try to find a set up here that is close to what you like or try to find one on fitment industries. This is what I did. Its good to know someone has a confirmed wheel set up so you know the set up works.
 
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Discussion Starter #512
Sorry I read most of this thread but I'm not 100% sure. Is a stock RS RWD with a 50 Offset on front and back? The lower the number, the further away from the suspension?

I'm looking at some staggered 19x8.5 and 19x10 with an offset of 20 each. I'm trying to figure this out so I can order the correct wheels for the Black Friday/ Cyber Monday price.
Read the first post.
 

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For those of you RWD owners who are looking to increase traction, you can always do something like what was done to this Viper:

96666
 

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Discussion Starter #514
the extra unsprung weight must help with traction trmendously.
 

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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.

Testing edit

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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I didn't see 255/40/19 for q50. I was wondering offset and width on wheels with stock suspension. I'd go with stock 245s, but I want the taller sidewall with roads. Any info I'd so appreciate. Ty. Squared.
 

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Hello All,

I’ve done my research a and I think this should work well (I like the look and I need more traction past my current 245/40 + 285/30 S04 on Ace Alloy Forged 20x9 +35 and 20x10 +40).
Looking for confirmation before buying this set below.
Forgestar F14 20x9.5 +33 / 20x11 +56 on 255/35/20 and 305/30/20.
 

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Anyone?
 
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