91TG

Could use some help. Looking for information dealing with installing a set of stock C7 wheels and tires on my stock 91 Z28 Camaro. Looking at a set of C7 wheels and tires that are like new 10K on them for 1K. TIA

ShiftyCapone

iTrader: (7)

Which C7 wheels? Base, or Z06/ZR1? Base wheels will fit with spacers (search). Z06/ZR1 wheels will stick out past the fenders in the rear.

91TG

Think they are base

ShiftyCapone

iTrader: (7)

They will fit, but you will need adapters. What size tires are on them?

Shinobi'sZ

Shifty I have some OEM C7 Z06 wheels and the rears are a 335 on a 20" wheel. How much do you think these would stick out past the rear fender and what spacer would be needed to run them? I posted a new thread but just found this one.
Thanks

ShiftyCapone

iTrader: (7)

What you have is what I tried, C7 Cup wheels with 335's. In my honest opinion you are not going to get it to work. I mini tubbed my car and had a wheel meaurement kit along with an actual 335 tire (OEM cup 2 tire), and the tire stuck out of the wheel well by a solid inch and on the inside was pressed against the panhard rod mount. It would take major surgery to get these to work. You will see posts on here all the time of guys running the C7 wheels but what they don't show you is how poorly they fit. I spent thousands of dollars and did a ton of fab work to get them to work and I still failed. I ended up selling the wheels and will comfortable run a tucked under 19X11 on a 305 tire.

Offset LCA's do clear but I have no room around the panhard rod mount

View from the top. Tire is resting against the panhard mount on the inside.

Side view (its sticking out more than the photo shows)

Mocking up the Cup 2 tire

Deep tub.

Shinobi'sZ

Very informative. With the tub they don't stick out too far IMO on the outside, but I can see how the inside would be a concern. Thanks for saving me a lot of grief, time, and money. I asked because I had considered going to 19" on all four corners on my C7Z, and was thinking it would be worth it if I could put my C7Z wheels on my 91' Z28. I have been holding out for the Hawks 18" wheels to become available. I will just wait out the Hawks wheels.
Thanks again!

ShiftyCapone

iTrader: (7)

Take a look at Cray wheels. That is what I am going to run. They are tailored to the vette folks but can obviously be made to fit 3rd gens. They are a cast wheel but aren't that expensive.

Shinobi'sZ

What size 18"s and backspacing would you recommend on a non tubbed car? Staggered is ok too.

ShiftyCapone

iTrader: (7)

The normal wheel sizing rules apply and a few factors have to be considered (quick search on here will yield a ton of results). Do you have a stock rear end, 4th gen, or aftermarket? 3rd gens came with zero backspacing on the front so depending on how wide you go you will need on average a 2" adapter (for vette offset). Same for the rear unless you are using a 4th gen rear, than a smaller adapter is required.

I currently have a 4th gen rear which means I am using a 3/4" spacer (I think) and a 69mm offset on a 19x10.5 wheel. For the front I will be starting with a 2" spacer on a 50mm offset on a 19x9. I say start because I am running C6 Z06 brakes which reduce the adapter size a bit. I won't know for sure until I get the fenders on the car.