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Old 02-18-2015, 09:00 PM   #1
Steve_ZL1
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Z28 Factory wheel offsets?

Please help... Looking for factory Z28 wheel offsets.

Front - 19x11
Rear - 19x11.5

Thanks in advance to anyone who knows the accurate specs...
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Old 02-18-2015, 09:07 PM   #2
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http://www.camaro5.com/forums/showthread.php?t=369676

Quote:
F 19x11ET11 (25mm further out than 1LE wheels)
R 19x11.5ET26 (23mm further out than 1LE wheels)
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Old 02-18-2015, 09:31 PM   #3
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Not sure this is correct.. Some have said the offsets on the Z28 wheels are

Front +18 and rear +25. So someone is way off. I wish I could get a "100% correct answer... Thanks for the info..
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Old 02-18-2015, 09:33 PM   #4
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Oh how about the fact the front wheel is an inch larger and the rear .5 inch in addition to the lower offsets. X25 is correct
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Old 02-18-2015, 09:38 PM   #5
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Quote:
Originally Posted by camaro500 View Post
Oh how about the fact the front wheel is an inch larger and the rear .5 inch in addition to the lower offsets. X25 is correct


BUT the question still is are the factory offsets correct at +18 and +25 for 100% sure??? Amazing how hard GM makes this info to find
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Old 02-18-2015, 10:00 PM   #6
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I have the wheels. The information is correct. It is stamped on the wheel, so not hard to locate, either.

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Old 02-18-2015, 11:33 PM   #7
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Quote:
Originally Posted by X25 View Post
I have the wheels. The information is correct. It is stamped on the wheel, so not hard to locate, either.

Your post is a bit hard to understand. Can you confirm the offsets please. What you posted reads I think is, +11 front and +26 rear? And these are stamped on the factory wheel.. Any pics of these stamps would be awesome if you have. Thanks for your time and info
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Old 02-19-2015, 12:20 AM   #8
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Quote:
Originally Posted by Steve_ZL1 View Post
Your post is a bit hard to understand. Can you confirm the offsets please. What you posted reads I think is, +11 front and +26 rear? And these are stamped on the factory wheel.. Any pics of these stamps would be awesome if you have. Thanks for your time and info
I didn't take a picture, but yes, you read that right. ET is used to denote offset of the wheel. I copy-pasted the info directly from Dropspeed's thread that I've also referenced.

I've looked into your build thread and looks like you already bought Niche wheels. So, what do you plan to do? What offsets do your current wheels have? I've been through various wheels, and I might be helpful.
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Old 02-19-2015, 12:55 AM   #9
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Quote:
Originally Posted by X25 View Post
I didn't take a picture, but yes, you read that right. ET is used to denote offset of the wheel. I copy-pasted the info directly from Dropspeed's thread that I've also referenced.

I've looked into your build thread and looks like you already bought Niche wheels. So, what do you plan to do? What offsets do your current wheels have? I've been through various wheels, and I might be helpful.
I sent you a PM..
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Old 02-19-2015, 01:12 AM   #10
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Quote:
Originally Posted by Steve_ZL1 View Post
I sent you a PM..
Just replied. My only big glaring question is that if you made sure 1LE/ZL1-spec wheels with a 23mm spacer would or would not rub the fender flares. The flares easily go down an inch by the tip, so if you get close to the tip, and use 1LE spec tires (which are 0.8" closer to the fender), and also lower the car on suspension, you might have rubbing issues.
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Last edited by X25; 02-19-2015 at 01:24 AM.
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Old 02-21-2015, 11:54 PM   #11
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I personally measured the backspacing and it does corroborate the front offset is 11mm and rear is 26mm.
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Old 08-27-2018, 08:53 PM   #12
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Quote:
Originally Posted by X25 View Post
I have the wheels. The information is correct. It is stamped on the wheel, so not hard to locate, either.

Bringing this post up from the dead to correct some info.

The actual correct offset of the 19x11.5 that is stamped on the inside of the wheels is 32.25mm.

The rear wheels on the Z/28 are 19x11.5 et32.25
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Old 09-07-2018, 09:03 PM   #13
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some one please take a picture of the wheel stamp and put this to bed please.
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Old 09-07-2018, 10:55 PM   #14
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