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Old 04-29-2013, 09:57 PM   #26
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29's huh,

Yes KM and I bust each others chops....
We've seen 30s before so I figured I could go 29s no problem. Surely they will do me a set of custom dubs for me.







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Old 04-30-2013, 06:41 AM   #27
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Originally Posted by chicagobulls View Post
Just to make sure, the concavity of the rim does not depend on width of rim. Correct?
I am afraid it does...
Would have gone with 20x9, 20x10 but I think I will ultimately go with 20x10, 20x11 just because of the "concavity" or deeper concave style on the 11, not sure though...

Doug, can you give us an insight on this matter?
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Old 04-30-2013, 08:18 AM   #28
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I really want to go with the 20x10 fronts and 20x11 rears for my 2011 SS but I am worried about the offset giving me issues lowering the car.

Am I better off going with the 20x9 fronts and 20x10 rear?

Sorry but the offsets always throw me off with wheels..
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Old 04-30-2013, 08:21 AM   #29
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Originally Posted by ToolFan66 View Post
I really want to go with the 20x10 fronts and 20x11 rears for my 2011 SS but I am worried about the offset giving me issues lowering the car.

Am I better off going with the 20x9 fronts and 20x10 rear?

Sorry but the offsets always throw me off with wheels..
I am currently running GM OEM 5-spoke ZL1 wheels and 20x10 & 20x11 my car is also lowered 1 1/4" over stock height, No issues at all with this setup.
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Old 04-30-2013, 09:33 AM   #30
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Quote:
Originally Posted by ToolFan66 View Post
I really want to go with the 20x10 fronts and 20x11 rears for my 2011 SS but I am worried about the offset giving me issues lowering the car.

Am I better off going with the 20x9 fronts and 20x10 rear?

Sorry but the offsets always throw me off with wheels..
I am also running a set of GM 21's with a 295 in the rear and my car is lowered about 1 1/2 inches with no problems at all. I do auto crossing in my car and zero issues!! No rubbing. As long as you have the right offsets you should be good!! I belive these wheels come with the same specs as the GM ZL1 wheels so you should have no problems running a 20X10 up front and a 20X11 in the rear. A lowered SS like mine should have no problems as im only about 1/4 lower than my buddies ZL1. (his ZL1 is at stock factory height)
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Old 04-30-2013, 09:34 AM   #31
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Thumbs up











I am super excited for these..


..
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Old 04-30-2013, 04:52 PM   #32
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David,

I'm looking forward to receiving these..

Thanks,
Larry.
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Old 04-30-2013, 05:40 PM   #33
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Originally Posted by AlexM View Post
I am afraid it does...
Would have gone with 20x9, 20x10 but I think I will ultimately go with 20x10, 20x11 just because of the "concavity" or deeper concave style on the 11, not sure though...

Doug, can you give us an insight on this matter?
Doug told me before they will all be the same concavity throughout sizes, I was skeptical but that is what he said about a month ago. Maybe things changed and now it is different?
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Old 04-30-2013, 06:55 PM   #34
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Originally Posted by chicagobulls View Post
Doug told me before they will all be the same concavity throughout sizes, I was skeptical but that is what he said about a month ago. Maybe things changed and now it is different?
I also believe that is what he said. Whether it is exactly true or not, I don't know, but the offsets of the rims should help determine their concave-ness...not just the width. The 9" wide rims have a 27 offset which quite a bit more aggressive than the stock rims, which means they will stick out further, which means they should have more concave than stock....which sounds awesome to me
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Old 04-30-2013, 07:50 PM   #35
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Originally Posted by KMPrenger View Post
I also believe that is what he said. Whether it is exactly true or not, I don't know, but the offsets of the rims should help determine their concave-ness...not just the width. The 9" wide rims have a 27 offset which quite a bit more aggressive than the stock rims, which means they will stick out further, which means they should have more concave than stock....which sounds awesome to me
Only thing with that is the concaveness of the 10 and 11 inch rims, would be less I believe.

Also i think the oem ZL1 rims are less concave in the front. So would this be the same way?
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Old 04-30-2013, 08:07 PM   #36
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Sure wish these were arriving before the 22nd
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Old 05-01-2013, 01:15 AM   #37
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is it just me or does anyone else really like the fact that there not an exact shape of the zl1...
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Old 05-01-2013, 08:40 AM   #38
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While trying to figure how deep is the concavity from one wheel from another and using the dimensions of the stock SS, ZL1 and the ones listed by Factory Reproductions, I have put a drawing together to show all the dimensions. I was thinking to use this for myself, but then realized I may share this and maybe it will help some of the members here in their decision.

If I miss anything, please let me know so that I may correct it.

The file is attached to this post.
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File Type: pdf Drawing1 Model (1).pdf (21.3 KB, 368 views)
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Old 05-01-2013, 09:52 AM   #39
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...and of course, the drawing was done to scale
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Old 05-01-2013, 10:25 AM   #40
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Quote:
Originally Posted by chicagobulls View Post
Doug told me before they will all be the same concavity throughout sizes, I was skeptical but that is what he said about a month ago. Maybe things changed and now it is different?
Quote:
Originally Posted by KMPrenger View Post
I also believe that is what he said. Whether it is exactly true or not, I don't know, but the offsets of the rims should help determine their concave-ness...not just the width. The 9" wide rims have a 27 offset which quite a bit more aggressive than the stock rims, which means they will stick out further, which means they should have more concave than stock....which sounds awesome to me
Quote:
Originally Posted by AlexM View Post
While trying to figure how deep is the concavity from one wheel from another and using the dimensions of the stock SS, ZL1 and the ones listed by Factory Reproductions, I have put a drawing together to show all the dimensions. I was thinking to use this for myself, but then realized I may share this and maybe it will help some of the members here in their decision.

If I miss anything, please let me know so that I may correct it.

The file is attached to this post.
Quote:
Originally Posted by chicagobulls View Post
Only thing with that is the concaveness of the 10 and 11 inch rims, would be less I believe.

Also i think the oem ZL1 rims are less concave in the front. So would this be the same way?
Quote:
Originally Posted by AlexM View Post
I am afraid it does...
Would have gone with 20x9, 20x10 but I think I will ultimately go with 20x10, 20x11 just because of the "concavity" or deeper concave style on the 11, not sure though...

Doug, can you give us an insight on this matter?
Sorry for the late reply, I reached my “bump limit” yesterday before I made a single post - go figure.

To answer the “concavity question” I placed a straight edge from one lip of a wheel to the other. I then measured the distance from the straight edge to the center of the wheel (see attached picture). The results are:

OE ZL1 20x11 – 2.1/2”
FR Style 41 20x11 – 21/2”
FR Style 41 20x10 – 2 3/8”
FR Style 41 20x9 – 2 1/4”

As you can see there is ¼ inch difference in the (concavity) between the 20x11 and 20x9. Visually it is not very noticeable to me.

What I said to one person who I remember asking about the “concavity” is that there would not be much of a difference across the sizes.

Hope this helps.
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Last edited by dougfr; 05-08-2013 at 04:56 PM.
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Old 05-01-2013, 10:35 AM   #41
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Awesome Doug! Thanks!

For me, all I care about is that they have more concaveness than the stock rims, which they obviously do lol. As I said before, the aggressive offsets of the 9" wide rims

As for determining how the different wheel sizes and offsets will look in comparison to your stock rims, I like to use this site:

http://www.willtheyfit.com

Enter the exact tire and rim size you currently have, and the exact tire/rim size you will be going to and it will show the differences.
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Old 05-01-2013, 11:37 AM   #42
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**UPDATE May 1, 2013***

We received a revised shipping manifest from our plant this morning.

There are no 20x11 polished finished wheels on the first container and limited quantities of the 20x9 and 20x10. The balance of the polished finish wheels should arrive no later than Mid-June. As soon as we have a firm ship date I will post it.

The other finishes in all sizes are still on track to arrive the week of May 22nd.

I apologize for not having this information sooner.
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Old 05-01-2013, 11:37 AM   #43
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Wow that concavity is so sick!
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Old 05-01-2013, 12:11 PM   #44
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Wow that concavity is so sick!
Right? I am in love with it!!!
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Old 05-01-2013, 12:13 PM   #45
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Awesome Doug! Thanks!

For me, all I care about is that they have more concaveness than the stock rims, which they obviously do lol. As I said before, the aggressive offsets of the 9" wide rims

As for determining how the different wheel sizes and offsets will look in comparison to your stock rims, I like to use this site:

http://www.willtheyfit.com

Enter the exact tire and rim size you currently have, and the exact tire/rim size you will be going to and it will show the differences.
Cool calculator!
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Old 05-01-2013, 12:22 PM   #46
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u guys in socal?
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Old 05-01-2013, 12:30 PM   #47
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Should I do 20x9 on all 4 corners on stock tires? Or 20x9 in front and 20x10 on back on stock tires and when its time to upgrade get a fatter rear tire?
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Old 05-01-2013, 02:12 PM   #48
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Should I do 20x9 on all 4 corners on stock tires? Or 20x9 in front and 20x10 on back on stock tires and when its time to upgrade get a fatter rear tire?
Assuming you currently have 245/45R20 front and 275/40R20 rear you can go either way. If you are looking to install larger tires when your current set wears out I suggest the 20x9 front and 20x10 rear.
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Old 05-01-2013, 02:14 PM   #49
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Assuming you currently have 245/45R20 front and 275/40R20 rear you can go either way. If you are looking to install larger tires when your current set wears out I suggest the 20x9 front and 20x10 rear.
A staggered set would be nice but when I have to replace my tires being able to rotate them would be nice too hmmmm
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Old 05-01-2013, 03:15 PM   #50
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Should I do 20x9 on all 4 corners on stock tires? Or 20x9 in front and 20x10 on back on stock tires and when its time to upgrade get a fatter rear tire?
I considered this, but the extra weight of the larger rear rims, weight of the larger tires, and extra cost versus a 9" wide 275 tire doesn't justify it for me.

For my purposes, I don't need the little bit of extra rear traction either.

Wouldn't be able to rotate them.

Also, the 10" rear rims with their deeper inset won't poke out much further at all than the 9" rims with their +27 offset, so the look won't be much different from the side of the car. The 10" tire would actually stick further in to the car than stock and this 9" wheel so that would be the biggest change. (fatter look from the back)

These are just my thoughts for my purpose. Others may want the staggered rims. Either way..its going to look awesome.
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