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      09-15-2018, 03:35 PM   #1
VETTEPRO
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ANYONE RUNNING a 20x11" REAR WHEEL?

I'm contemplating having an 11" rear wheel made so I can run a Nitto NT01
in 315-30-20. We've run these on the standard C7 Corvettes with a stock wheel, but they look a lot better on an 11" wheel. With an ET 37 offset, the wheel pushes out 10MM and the inboard side pushes in 16MM.
If anyone has done this successfully, let me know. Otherwise I need to remove the strut and cycle the suspension to see how much clearance I have on the inboard side with the stock wheel/ tire combo.
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      09-15-2018, 06:43 PM   #2
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Works well on a 20x11 and 315/30/20 R888Rís. Clears the strut and flush with the fender.
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      09-15-2018, 08:56 PM   #3
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Quote:
Originally Posted by allmotor_2000 View Post
Works well on a 20x11 and 315/30/20 R888Rís. Clears the strut and flush with the fender.
I figured it would, but it's nice to know someone has actually tried it.
I have the R888Rs on my '17 Grand Sport. They are awesome but noisier than the earlier R888 or the NT01. I have no idea why.
Thanks.
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      09-16-2018, 06:21 AM   #4
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Quote:
Originally Posted by allmotor_2000 View Post
Works well on a 20x11 and 315/30/20 R888R’s. Clears the strut and flush with the fender.
I have them, currently have 305/35-20 R888r's on the back. The 20x11 needs a wider tire. Once worn out going to go with 325/30-20 R888r
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      09-16-2018, 12:42 PM   #5
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Quote:
Originally Posted by VETTEPRO View Post
I figured it would, but it's nice to know someone has actually tried it.
I have the R888Rs on my '17 Grand Sport. They are awesome but noisier than the earlier R888 or the NT01. I have no idea why.
Thanks.
The tread pattern on the r888r is different, maybe even less of a tread pattern (more rubber contact)...maybe that explains the noise. But they are noisy, and awesome grip.
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      09-16-2018, 12:43 PM   #6
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Quote:
Originally Posted by KMORGSM5 View Post
I have them, currently have 305/35-20 R888r's on the back. The 20x11 needs a wider tire. Once worn out going to go with 325/30-20 R888r
You can fit a 35 sidewall on back? Car is not lowered?
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      09-16-2018, 06:43 PM   #7
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I'm running signature wheels 20x11.5 with Toyo r888r.
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      09-16-2018, 08:49 PM   #8
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Quote:
Originally Posted by Mcc420 View Post
I'm running signature wheels 20x11.5 with Toyo r888r.
That's interesting. Do you know the offset?
I'm basing my measurements off the stock wheel being 20 x 10 with a 34MM offset. Does anyone know for sure if this is accurate as a starting point ?
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      09-17-2018, 06:48 AM   #9
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20x10 et 28
20x11.5 et 33
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      09-17-2018, 06:05 PM   #10
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How can that be? That puts the outside of the wheel out by 20 MM and the inside further in by 18 MM. I donít see anyway I could move the outside of the rim out by 20MM and not rub.
I also saw a set of HRE FF 101 wheels advertised on here with a 10.5 and 26 MM offset. That also put the wheel out by almost 15MM. That also seems really close, especially with a 315 tire.
Can anyone verify that the stock wheel is 20 x 10 with a 34MMoffset? If this measurement is off, it screws up all my calculations.
Thanks
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      09-17-2018, 09:00 PM   #11
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Read young Jedi
Final decisions on rims ! https://f10.m5post.com/forums/showthread.php?t=1411464
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      09-18-2018, 04:04 AM   #12
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I'm running 21x11 ET31 in the rear with 305/25/21 Michelin PS4S tires. There's definitely room for a wider tire, 315 or maybe even 325. I'm lowered on KW HAS, but not all the way down and there's 0 rubbing.

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      09-18-2018, 08:51 AM   #13
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Mine just looks closer than that with the stock CP 20s on it. I have some 15MM spacers from my 550i. I'm going to put those on later today and see where I'm at.
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      09-19-2018, 09:34 PM   #14
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Quote:
Originally Posted by apexlocator View Post
Quote:
Originally Posted by KMORGSM5 View Post
I have them, currently have 305/35-20 R888r's on the back. The 20x11 needs a wider tire. Once worn out going to go with 325/30-20 R888r
You can fit a 35 sidewall on back? Car is not lowered?
Stock CP suspension, looks great and need the side wall for all the TQ
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      09-22-2018, 07:26 PM   #15
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Quote:
Originally Posted by Mcc420 View Post
20x10 et 28
20x11.5 et 33
OK. I tried 15MM spacers on the STOCK wheels with Pirelli P Zero 295-30 20 and I definitely rub on large bumps. Going out of the driveway to my shop I have to go down at an angle and the right side rubs unless I really creep.
I can't see how everyone is running offsets that put the wheel out this far.
The wheel manufacturers all want to make the wheels with this offset as well.
Yours is out 20MM and the overall width of that tire is 12.6". Does the tire bulge out beyond the lip of the rim by much? It seems like it must be almost even with the outside lip to work.
Mine has the Carbon Ceramic brakes, but I can't imagine that would make any difference.
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      09-25-2018, 06:36 AM   #16
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No rubbing I also have adjustable coils.
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      09-30-2018, 10:38 AM   #17
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I run 21x11 rear wrapped in the MPSS
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