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HELP~All squared setups please post here!

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Old 04-10-2018, 09:53 AM
  #946  
blnewt
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Originally Posted by Bionicman
Intriguing, I'll check it out. Thanks! Do you know of anyone that has put these wheels on a G sedan? I'm curious what they'd look like.
Here's the original post about them, you'll see in the first post some pics on a 1st generation G35 sedan, not bad looking IMO
https://www.myg37.com/forums/g37-sed...mo-s-rims.html
Old 04-10-2018, 10:13 AM
  #947  
Bionicman
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Originally Posted by blnewt
Here's the original post about them, you'll see in the first post some pics on a 1st generation G35 sedan, not bad looking IMO
https://www.myg37.com/forums/g37-sed...mo-s-rims.html
Perfect, thanks!
Old 04-10-2018, 11:04 AM
  #948  
llj3663
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Originally Posted by blnewt
Welcome to the site, looks like you've been put on the right path
If you do choose 265s I would go w/ the 35 series, like Chaos mentioned the 40 series will be about .6" taller and over 2% taller than oem size. The 35 isn't great (diameter-wise) at almost .5" shorter but better than the 40.

Also keep in mind the 265 widths are a bit scarce compared to a 255 or 275 width, so I'd lean towards either a 255/40 or 275/35, these are much easier to find as far as the tire models and might be cheaper???

Only caveat w/ 275s is the wider tires in front will tend to slow your steering response and may be more prone to tramlining. But they DO look badas$
Thanks for the advice and the welcoming. I had to look up tramlining, turns out there's been a word for that all along Are the G's more susceptible to this? Since I've had mine I've noticed it quite a bit more than previous or other people's cars.

For the tires, I'll probably go with 255/40 or 265/35 then since I'm not a very big fan of the tramlining haha.

Thanks again!
Old 04-10-2018, 09:51 PM
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One more follow-up question that I'm sure I could find with a little digging, but it should be an easy one. Is there any risk of damaging the AWD system or other areas of the drivetrain if I do go with the larger 265/40 tire size?
Old 04-10-2018, 11:06 PM
  #950  
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Going w/ a square setup reduces the risk of AWD issues, but I would try to stay as close to OEM diameter unless you really want that taller sidewall. Shouldn't have a problem but w/ the more complex AWD system IMO it's best to stay as close to oem parameters as possible.
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Old 04-11-2018, 08:34 AM
  #951  
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Originally Posted by blnewt
Welcome to the site, looks like you've been put on the right path
If you do choose 265s I would go w/ the 35 series, like Chaos mentioned the 40 series will be about .6" taller and over 2% taller than oem size. The 35 isn't great (diameter-wise) at almost .5" shorter but better than the 40.

Also keep in mind the 265 widths are a bit scarce compared to a 255 or 275 width, so I'd lean towards either a 255/40 or 275/35, these are much easier to find as far as the tire models and might be cheaper???

Only caveat w/ 275s is the wider tires in front will tend to slow your steering response and may be more prone to tramlining. But they DO look badas$

+1 on this. I have 265/40/19 +35 on 19x8.5 squared, the tires aren't particularly easy to find and I tramline HARD. But you are right, it does look mean af.


EDIT: And yes the 35 vs 40 series points are legit. I went with the added sidewall because I went one size over max rec. and also live somewhere with horrible roads. So the extra sidewall helps.
Old 04-11-2018, 09:55 AM
  #952  
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Originally Posted by zaz
+1 on this. I have 265/40/19 +35 on 19x8.5 squared, the tires aren't particularly easy to find and I tramline HARD. But you are right, it does look mean af.


EDIT: And yes the 35 vs 40 series points are legit. I went with the added sidewall because I went one size over max rec. and also live somewhere with horrible roads. So the extra sidewall helps.
Do you by chance have a photo of the 265/40 tire on a 8.5" wheel? There's gotta be some serious sidewall bulge there.
Old 04-11-2018, 09:57 AM
  #953  
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Originally Posted by zaz
+1 on this. I have 265/40/19 +35 on 19x8.5 squared, the tires aren't particularly easy to find and I tramline HARD. But you are right, it does look mean af.


EDIT: And yes the 35 vs 40 series points are legit. I went with the added sidewall because I went one size over max rec. and also live somewhere with horrible roads. So the extra sidewall helps.
Yeah, that's why I'm leaning towards the 40 vs 35. Live in the upper-Midwest, so I get to deal with the pristine pothole filled roads

Just curious, with wider wheels (9.5 vs 8.5) does that bring the sidewall height down after they tires are mounted due to the extra "stretch"?
Old 04-11-2018, 12:28 PM
  #954  
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Originally Posted by Bionicman
Do you by chance have a photo of the 265/40 tire on a 8.5" wheel? There's gotta be some serious sidewall bulge there.
Surprisingly minimal with the firehawk indy 500s. I had pirelli p zeros before which bulged a LOT since they tend to run wider IME. I'm at work now but I attached the only decent picture I had saved on my phone that you could get a feel for the sidewall bulge from.



Originally Posted by llj3663
Yeah, that's why I'm leaning towards the 40 vs 35. Live in the upper-Midwest, so I get to deal with the pristine pothole filled roads

Just curious, with wider wheels (9.5 vs 8.5) does that bring the sidewall height down after they tires are mounted due to the extra "stretch"?
blt will probably have a much better response, and correct me if I'm wrong, but from my understanding the stretch/bulge will only affect sidewall (significantly) if it's above or below the recommended tire width for the rim width. The recommended range tends to be roughly 30mm wide anyways so I don't see that making a huge difference as long as it's within spec.

Last edited by zaz; 04-11-2018 at 12:35 PM.
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Old 04-11-2018, 12:33 PM
  #955  
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Originally Posted by zaz
Surprisingly minimal with the firehawk indy 500s. I had pirelli p zeros before which bulged a LOT since they tend to run wider IME. I'm at work now but I attached the only decent picture I had saved on my phone that you could get a feel for the sidewall bulge from.

Wow, that doesn't look bad at all! I've seen 255 tires that bulged worse than that on an 8.5" wheel.

Edit: I figured out why those look so good . . . despite being marketed as 265/40, the tread width on the Firehawk Indy 500 is only 8.8". The tread width on the 255/40 Pilot Sport A/S 3+ is actually wider at 9.0". Tire sizing kills me, lol.

Last edited by Bionicman; 04-11-2018 at 12:41 PM.
Old 04-11-2018, 01:21 PM
  #956  
bPChaos
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Originally Posted by Bionicman
Wow, that doesn't look bad at all! I've seen 255 tires that bulged worse than that on an 8.5" wheel.

Edit: I figured out why those look so good . . . despite being marketed as 265/40, the tread width on the Firehawk Indy 500 is only 8.8". The tread width on the 255/40 Pilot Sport A/S 3+ is actually wider at 9.0". Tire sizing kills me, lol.
Yeah, different companies measure differently, so it's really a hit or miss if you're looking for that last millimeter. Another point of comparison, my 265 Hankook RS3s are around 10 inches wide at the tread, with the 265 Federal RSRRs I had previously nearly pushing the 10.5 inch mark. It's kinda dumb.
Old 04-11-2018, 01:28 PM
  #957  
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Originally Posted by Bionicman
Wow, that doesn't look bad at all! I've seen 255 tires that bulged worse than that on an 8.5" wheel.

Edit: I figured out why those look so good . . . despite being marketed as 265/40, the tread width on the Firehawk Indy 500 is only 8.8". The tread width on the 255/40 Pilot Sport A/S 3+ is actually wider at 9.0". Tire sizing kills me, lol.
Originally Posted by bPChaos
Yeah, different companies measure differently, so it's really a hit or miss if you're looking for that last millimeter. Another point of comparison, my 265 Hankook RS3s are around 10 inches wide at the tread, with the 265 Federal RSRRs I had previously nearly pushing the 10.5 inch mark. It's kinda dumb.
Yep that's exactly it. I believe my p zeros despite being '265mm' were over 10" wide at the tread (I think that's where that value is measured?) while yeah these are 8.8". Crazy stuff. The pirelli didn't even bulge THAT badly though surprisingly.
Old 04-12-2018, 08:17 AM
  #958  
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Originally Posted by zaz
Yep that's exactly it. I believe my p zeros despite being '265mm' were over 10" wide at the tread (I think that's where that value is measured?) while yeah these are 8.8". Crazy stuff. The pirelli didn't even bulge THAT badly though surprisingly.
What kind of pressure are you running in those tires?
Old 04-12-2018, 08:27 AM
  #959  
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Originally Posted by Bionicman
What kind of pressure are you running in those tires?
I started off running either 34 or 35 psi but either didn't drive as well. I found some calculations online based on tire dimensions and weight. Calculated the "weight per tire" that OEM tire size pressure was based off, then plugged in dimensions for these tires but pressure required for same weight rating, and came to a number around 32 psi. At 32 psi these drive incredibly well. Canada had a surprise cold spell and I put these on already, and even as low as 1 or 2 degrees in the wet they're performing acceptably.
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Old 04-12-2018, 10:12 AM
  #960  
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zaz can you link to the calculator?


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