Wheel numbers
Thread Starter
Melting Slicks
Joined: Nov 2005
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From: Green Valley Arizona
Wheel numbers
Just wanted to be sure here, am looking at some 2016 Corvette OEM wheels, owner says these are the numbers on the backside. Am I correct in that the offsets are 78 and 57, positive? The rears are stamped with 19x10JxIS78 serial number 22967677. The fronts are stamped with 18x8.5JxIS56 serial number 22967681.
Last edited by LannyL81; Aug 28, 2024 at 08:13 PM.
Race Director
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From: Hickory NC
2025 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
2020 C5 of the Year Finalist - Modified
St. Jude Donor '17 thru '26
Those are correct numbers for the Corvette split 5-spoke wheels, however I believe the offset of the front wheel is 56 instead of 57.
Race Director
Joined: Apr 2017
Posts: 10,247
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From: Hickory NC
2025 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
2020 C5 of the Year Finalist - Modified
St. Jude Donor '17 thru '26
This wheel was available on 2016-2019 Corvettes. I believe it was available in painted and chromed finishes, but our friends in the C7 area can provide more complete information.
As you are probably aware, these wheels are a straight bolt on to your C5, however you will need a 1” (25mm), spacer to bring the rear wheels flush with the fender.
Factory tire sizes were 245-40/18 and 285-35/19.
Larger brakes, such as from the C6 Z06, may require a small spacer to clear the front caliper; rears should be fine.
As you are probably aware, these wheels are a straight bolt on to your C5, however you will need a 1” (25mm), spacer to bring the rear wheels flush with the fender.
Factory tire sizes were 245-40/18 and 285-35/19.
Larger brakes, such as from the C6 Z06, may require a small spacer to clear the front caliper; rears should be fine.
Last edited by Route99; May 6, 2023 at 11:13 AM.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
I thought the 5 split spoke wheels were be a bolt-on, did not know that the rears would require a 1" spacer though....ugh...not a fan of spacers.
Will probably pass on these wheels....still looking for a set of base C6 polished 5 spoke wheels.
Will probably pass on these wheels....still looking for a set of base C6 polished 5 spoke wheels.
Race Director
Joined: Apr 2017
Posts: 10,247
Likes: 888
From: Hickory NC
2025 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
2020 C5 of the Year Finalist - Modified
St. Jude Donor '17 thru '26
I believe you will find that all base size C6/C7 wheels are 18x8.5 and 19x10, with the same 56mm offset front, 79mm offset rear.
You can test fit a rear wheel without a spacer just to insure it doesn’t rub on the inside if you do not want to use a spacer, but it will really be tucked up inside the fender line. All the basic C6/C7 wheels are going to require a spacer to bring the rear wheel flush with the fender.
You can consider custom wheels that allow you to specify offset but those get pricey.
You can test fit a rear wheel without a spacer just to insure it doesn’t rub on the inside if you do not want to use a spacer, but it will really be tucked up inside the fender line. All the basic C6/C7 wheels are going to require a spacer to bring the rear wheel flush with the fender.
You can consider custom wheels that allow you to specify offset but those get pricey.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Hmmmm.....I had one listing that showed the rear 19x10 with a +68 offset......perhaps that was an error??
I have that the OEM C5 rear wheel is an 18x9.5 +65 offset, a C7 rear wheel is 19x10 with a 79 offset, half an inch in wheel width difference is 12.7...so 79+12.7= 91.7, subtract 65 = 26.7mm....so that is where the 1 inch spacer comes from.
I was hoping that there were C6 wheels with this 68 offset.....aaarrgghhh....looks like spacers are in my future. Custom wheels!!!...not on my budget!
Maybe I will get these C7 wheels afterall.....have not seen them yet, only a picture and they are two hours one-way from me.
I have that the OEM C5 rear wheel is an 18x9.5 +65 offset, a C7 rear wheel is 19x10 with a 79 offset, half an inch in wheel width difference is 12.7...so 79+12.7= 91.7, subtract 65 = 26.7mm....so that is where the 1 inch spacer comes from.
I was hoping that there were C6 wheels with this 68 offset.....aaarrgghhh....looks like spacers are in my future. Custom wheels!!!...not on my budget!
Maybe I will get these C7 wheels afterall.....have not seen them yet, only a picture and they are two hours one-way from me.
Last edited by LannyL81; Aug 28, 2024 at 08:20 PM.
