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ZL1 Wheels/Tires Wheels and tires discussion for ZL1

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Old 07-03-2012, 02:59 PM   #1
Sajonf
 
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SS wheels test fit?

Has anyone test fit a set of SS wheels to see if the clear the ZL1 brakes?

I am looking for a set of wheels to mount winter tires on and I know there is a Pirelli set that works with the stock SS wheels.

Thanks!
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Old 07-03-2012, 03:33 PM   #2
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I already bought a set but didn't test fit. SInce they are the same diameter, I assumed they would fit fine.
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Old 07-03-2012, 03:41 PM   #3
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Thanks.. I assume they will too - just looking for confirmation before I pull the trigger.
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Old 07-03-2012, 05:11 PM   #4
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Edit - if I knew the precise answer, I'd give it to you straight out. But all I can do at this point to help is mention something else to check for.

What you need to confirm is not just that the "barrel" of the wheel will fit over the outside diameter of the caliper but that the back sides of the spokes will everywhere clear the outward thickness of the caliper as well. Unfortunately, this isn't easy to do "by eye".


This exact issue is a huge deal over on the Mustang side of the street, with many 18" aftermarket Mustang wheels not fitting cars with the 14" GT500 brakes even though the GT500's at the time wore 18" wheels. I know, I know, there's that "other car" again. But that doesn't eliminate the need to check this here. Unfortunately, dimensional "gotcha's" like this do occasionally happen.


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Last edited by Norm Peterson; 07-03-2012 at 05:27 PM.
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Old 07-03-2012, 05:27 PM   #5
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Absolutely agree norm that's why i asked. There are many factors to consider such as diameter, offset, back spacing, etc. Hopefully someone will do a test fit soon..
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Old 07-03-2012, 05:50 PM   #6
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spare

They will fit. I took the front off my 2010 ss and it will clear. I took it to Georgia with me, to the fbod gathering. Not going to be at the mercy of a not noing tow truck driver. I'm looking for a polished wheel, if anyone knows where one is for sale.
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Old 07-03-2012, 11:24 PM   #7
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They will fit - in fact we had a few 2012 CTF ZL1s running around the Motor City last winter with SS wheels and Scorpion Snow tires -

I recommend that you order all-seasons or ice/snow tires early - they're not easy to find in the sizes that the ZL1 requires.
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Old 10-11-2012, 04:43 PM   #8
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fbodfather: confirmation please

Quote:
Originally Posted by fbodfather View Post
They will fit - in fact we had a few 2012 CTF ZL1s running around the Motor City last winter with SS wheels and Scorpion Snow tires -

I recommend that you order all-seasons or ice/snow tires early - they're not easy to find in the sizes that the ZL1 requires.
Scott,
I am about to buy a set of SS wheels for my ZL1 and run all season tires for the colder months here in MD. Not clear about your statement about the CTF using SS wheels and Scorpion winter tires, in conjunction with your statement about "sizes that the ZL1 requires".

Is it okay to use the SS wheels with the 245/45/20 F and 275/40/20 R tire size that is standard on the SS? Or do I need to mount different size tires on the SS wheels for the ZL1?
Thanks,
Gary
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Old 10-11-2012, 09:17 PM   #9
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Quote:
Originally Posted by SSeemego View Post
Scott,
I am about to buy a set of SS wheels for my ZL1 and run all season tires for the colder months here in MD. Not clear about your statement about the CTF using SS wheels and Scorpion winter tires, in conjunction with your statement about "sizes that the ZL1 requires".

Is it okay to use the SS wheels with the 245/45/20 F and 275/40/20 R tire size that is standard on the SS? Or do I need to mount different size tires on the SS wheels for the ZL1?
Thanks,
Gary
I would like to know this as well.I was thinking of running a 275-40 0n the front and a 315 35 on the rear.I dont see many options out there in the 285 35 for the front.
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Old 10-11-2012, 11:13 PM   #10
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Quote:
Originally Posted by SSeemego View Post
Scott,
I am about to buy a set of SS wheels for my ZL1 and run all season tires for the colder months here in MD. Not clear about your statement about the CTF using SS wheels and Scorpion winter tires, in conjunction with your statement about "sizes that the ZL1 requires".

Is it okay to use the SS wheels with the 245/45/20 F and 275/40/20 R tire size that is standard on the SS? Or do I need to mount different size tires on the SS wheels for the ZL1?
Thanks,
Gary
I think what fBodfather was saying was that yes the SS wheels will fit and that they were using them with Scorpions on them on the CTF, but if you want to run them on the ZL1 wheels, you best get them while you can since they are hard to find in the sizes needed for the ZL1 wheels.
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Old 10-12-2012, 01:17 PM   #11
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Quote:
Originally Posted by HDRDTD View Post
I think what fBodfather was saying was that yes the SS wheels will fit and that they were using them with Scorpions on them on the CTF, but if you want to run them on the ZL1 wheels, you best get them while you can since they are hard to find in the sizes needed for the ZL1 wheels.
HDRDTD,
Thanks.
I really was wondering if the SS tires 245/45/20 and 275/40/20 were the ones they used.
I know Scott is busy and probably won't see this right away, if at all. But thought I would ask anyway.

Gary

Last edited by SSeemego; 10-12-2012 at 03:30 PM.
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Old 10-12-2012, 09:52 PM   #12
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Does anyone have any pictures of a ZL1 with the stock SS wheels on them? I'm curious how they will look. I am not expert by any means but I think depending upon the offsets, the SS wheel could stick out or be recessed in the wheel well. Can anyone comment on that?
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Old 10-13-2012, 11:24 AM   #13
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What I have for the SS
Front 245/45-20 on 20 x 8 x +35mm wheels
Rear 275/40-20 on 20 x 9 x +40mm wheels


For the ZL1
Front 285/35-20 on 20 x 10 x +?? wheels
Rear 305/35-20 on 20 x 11 x +?? wheels


If somebody can post accurate offsets of the ZL1 wheels, I can post up plots where the front SS wheel/tire package is overlaid on the ZL1 (and do the same for the rear). It accounts for the tire section width varying as wheel width differs from the "measuring width", <text deleted>

<sample plot deleted, see later post>





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Last edited by Norm Peterson; 10-13-2012 at 04:37 PM.
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Old 10-13-2012, 02:00 PM   #14
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Some of our 2012 CTF ZL1s had SS wheels and ice/snow tires on them last winter - simply because we could not get the ZL1 sized tires in time to put the cars in service....from the side, they pretty much look like an SS until you see the hood and front splitter.
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Old 10-13-2012, 02:11 PM   #15
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Quote:
Originally Posted by Norm Peterson View Post
What I have for the SS
Front 245/45-20 on 20 x 8 x +35mm wheels
Rear 275/40-20 on 20 x 9 x +40mm wheels


For the ZL1
Front 285/35-20 on 20 x 10 x +?? wheels
Rear 305/35-20 on 20 x 11 x +?? wheels


If somebody can post accurate offsets of the ZL1 wheels, I can post up plots where the front SS wheel/tire package is overlaid on the ZL1 (and do the same for the rear). It accounts for the tire section width varying as wheel width differs from the "measuring width", and will look more or less like ↓↓↓ . . . . please keep in mind that ↓↓↓ is for illustration purposes only.





Norm
ZL1 front 22mm
ZL1 rear 39mm
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Old 10-13-2012, 02:27 PM   #16
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As soon as I can find a new set of centering rings I'll be putting my set of American Racing Torqe Thrust wheels/tires I kept from my 2011 Vert on my ZL1 Vert, not to drive it, but simply to be able to put them on and put the ZL1 wheels/Tires indoors for the winter.
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Old 10-13-2012, 02:52 PM   #17
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Quote:
Originally Posted by HDRDTD View Post
As soon as I can find a new set of centering rings I'll be putting my set of American Racing Torqe Thrust wheels/tires I kept from my 2011 Vert on my ZL1 Vert, not to drive it, but simply to be able to put them on and put the ZL1 wheels/Tires indoors for the winter.
Would you please post some good pictures
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Old 10-13-2012, 04:27 PM   #18
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In all cases, the wheel mounting surface is taken at 0.0" on the horizontal axis. Offsets are between X = 0.0" and X = at the other vertical centerlines, which are the centerlines of the wheels chosen. Tire section width and height are calculated based on nominal tire sizes and adjusted by any difference between the actual wheel width and the "measuring width" wheel. The sidewall shape is a curve fit and is therefore approximate, but the extreme width is a calculated number that the curve fit works with.

Holding the mounting flange location constant means that the tire and wheel outlines reflect how the two combinations appear compared to each other as installed on the car, as viewed in purely front or rear view.

Sorry for the stuff in the upper lefthand regions of the plots - it pretty much has to go there or else I can't see what's happening as I enter the data.


Fronts:

Unless there is some inboard limitation on the location of the inboard flange and sidewall, this still looks odd.





Rears:




BTW - thanks for prodding me into adding a couple of tire sizes and fixing a couple of errors.


Norm
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Old 10-13-2012, 08:29 PM   #19
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Quote:
Originally Posted by RobZL1580 View Post
Would you please post some good pictures
Well, I found a place that sells the rings and I ordered a set. After they get here, I'll take some 'before' pictures, then I'll put the 2011 Torque Thruster wheels on (with stock tires) and take some 'after' pictures.
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Old 10-30-2012, 04:03 PM   #20
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Has anyone done this yet with success? Any pictures you can share?
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Old 10-30-2012, 04:25 PM   #21
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My hub rings finally came in and I hope to pick them up tomorrow.
After that I'll just have to wait and see if it gets warm enough for me to put them on myself, or if I'll just chicken out and let the dealer change them.

If/when I get them installed, i'll try and take some pictures.
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