WTH happened to the forum search? Leave the forum & You google C8 wheels on C5 and there's at least 5 hits directly linking CF C5 section
https://duckduckgo.com/?q=C8+wheels+...ia=images&pn=1

Any new news; photos, 5x120-5x120.7 hub centric spacers on members who are wearing C8 wheels?

Have great day
Thanks
Hary

 

I think the base wheels are ugly but the anniversary c8 wheels look great

 

^ To each their own I guess. Looks like an Infiniti rim. Never have been a black, dark wheel fan

Since the forum search is non existent about C8 on C5’s was interested if anyone lately had used a specific hub bore 5x120 adapter or anyone new lately using C8 wheels on C5’s
Cheers

 

Did they not also increase the stud diameter for the C8?

 

Unless someone swaps to C8 hub bolt pattern the answer is mute.

Only the hole machined into the wheel for studs is even relevant. The - .7 diameter difference in the bolt pattern the highest degree of critical fitment. That and the hub bore but this has all been discussed many times already.

So has anybody in the past 6 months or so mounted and running C8 wheels?

 

 

I’ve inquired on 2 FS’s and another feeler for wheel sets. 1 guys on vacay and I’m waiting on the other fella to return a msg so there is sets out there.
My son’s BF is a mechanist & said he’d gladly machine the center bore for us.
My issue with a sale is shipped cost. This is when living in the PNW makes life difficult. Seattle is the closest place of larger numbers of Corvettes. So I don’t mind traveling to pick up wheels but Portland is about 5hrs one way so if I can lock down a set but I’ll just have to wait and see

 

look like I'm seeing double, that's a lil trippy

"how many fingers am I holding up"

haha

 

Some like a black wheel look which can offset certain cars except
I have a triple black roadster so dark wheels are too much an all blacked out look for me.

 

This is looking at being a specialty Mod that makes it unique but expensive and time consuming.

I found a set of C8 wheels that were in good shape with a price I could live with. So the earnest search for fitment got real.
What I found was disheartening and expensive to work correctly and be safe long term
To fit the rims on C5 wheel studs you need Variation nuts (or "wobble") lug nuts in 12m x 1.5.
You need a thin spacer to accommodate the C8/C5 hub bore that are hub centric. Thin as 1/4"
Then the thickness of the spacers on OE C5 wheel studs pushes it quite close to the end of the threads.

So; To safely put C8 wheels on a C5 you're looking at

Variation nuts
1/4 " Hub centric spacers
New longer wheel studs. Studs (rear) are a major PITA
I'd guess $ 400 for all the gear to safely attach the wheels.
All in, a middle of the road figure would be $3000 mounted on the car for hardware, wheels & tires. Not insane but is the juice worth the squeeze? Maybe, maybe not
After all this I'm not totally out. I have used spacers on 3 cars before. I just dont like the extra attention necessary. Adding to that "wobble" nuts are not great for my OCD. I got enough personal pre flight check lists already.

I'm looking into another avenue that might be alot safer but for now I have to do more homework before I make a decision that's tough to walk back.

 

I already know I'm going to regret this post, but for posterity's sake....


You definitely don't need wobble nuts. 5x120 and 5x120.7 are functionally the same thing. 120.7 is just the SAE measurement of 4.75". It's been done a million times, and no one has ever produced an actual failure related to the supposed "risky" practice. People put BMW wheels on these cars frequently.

 

You're right. It has been done.
But BMW wheels are not M14x 1.5 either. I don't physically have the wheels to see if the larger diameter taper seat machined into the C8 rim might cause some issues due to being different angle or larger seating surface than a M12x size or not

I get what you're saying, there's just a lot of small variables that need to addressed before I shove a set on the car. Like rear poke. The offset for rears are 64. I'm still looking at this all trying to scope out the best way to get a solid long term solution

 

Would the C8 wheels have their centerbore machined to fit the C5? (as opposed to using hubcentric spacers to adapt the centerbore)
If no spacers, there wouldn't be poke in the rear. The wheel would have similar 'poke' to a stock C5Z wheel:

• C5Z rear wheel: 18x10.5, ET58
• C8 rear wheel: 20x11, ET64
• C8 rear wheel being 0.5" wider means that for a given offset the wheel will stick out 0.25" (6.35mm) further. So 64mm - 6.35mm = 57.65mm --> very close to C5Z 'poke'

 

Definitely what I would do if I had a way to do it.

 

I know everyone's comfort level is different, so I'm not going to change your mind. But I agree with Stingroo and MetalMan2 as well. Tons of people run 5x120 wheels on these things with no issues at all, including myself for the past couple years. It's a non-issue with regular old lug nuts. I don't understand why you'd need hub centric rings or spacers if your son's boyfriend can open up the hub bore to 70.3, making the wheel itself hubcentric...with a perfectly centered wheel and correctly torqued lug nuts, I wouldn't sweat a thing. The clamping force of the lug nuts is what holds the wheel to the hub, it doesn't rely on the 14mm lug nuts to hold weight or anything. With the hub bore corrected, it should be a zero dollar mod.

With that being said, it seems like you're looking at paying ~$2,600 for the wheels/tire otherwise, which seems pretty steep for OEM wheels that aren't very popular. For that kind of money, I'd be picking out some C5 specific wheels and tires of my choice or waiting for some sweet used ones to pop up. These really don't look bad on a C5 honestly, it's just a lot of money and hassle just to "make it work".

 

This is part of what I meant about researching the #'s to get a better fit.
Yes, you could machine out the center. the difference is very little between C8 & C5 Z06 rr wheel

 

Absotively right. This speaks to where we live too. I tried without much luck looking for rims close to me but closest was about 500 mi one way so then it adds into price of wheels for shipping and lately haven't had good luck with UPS, Fedex or USPS.

I already have a set of TSW Mako 18/19" wheels in boxes I bought over a year ago i picked up for a song. Problem is they're black. I have a triple black Convertible. I don't want a murdered out car. I priced the wheels out to have them vapor blasted and powder coated silver at around $500-600
When I saw the C8 wheels I thought it would be cheaper than what I paid for the present wheels after powder coating, so I have that as an option if C8's don't work out

If I can figure out the C8/C5 fitment that is my ultimate goal and then I'll put the Mako's up FS but I get what you mean about sorting out issues just to get a wheel to work for sure

 

Someone on the Portland Craigslist has a set of take offs from a 2023 for $1000 as of yesterday.

 

I contacted him while I was in Hawaii and we’ve been talking. The wheels are in good condition and have caps

 

Gotta be honest, I can't see what is left to figure out. Can you shed some light on that?