New Caprice - Discussion forums

I just wanted to get confirmation that the rears would rub.

I was going to pick these up but after searching around I don't by think they would fit.

275 40 20
255 40 20

I'm not lowered. Stock height

Tires might be a little too big.

https://tiresize.com/calculator/

I've always use this when comparing tire sizes. I hope this helps.

Will they fit - yes. Pattern & hub center are correct - 120mm bolt circle (NOT 4.75) and 67.1 (give or take) wheel center bore - same as all Zeta platform and specific Alpha platform (Camaro & some Cadillac models)

Will they fit correctly - depends. People DO use them and report "no" issues, but a decision about tire size, including a tire correct for the bead widths of the Gen6 wheels, is key.

Compare Gen5 (2010-2015) & Gen6 (2016>present) Camaro 20" wheels

Gen5
Front wheel - 20x8 +35 offset
Rear wheel - 20x9 +40 offset

Gen6
Front wheel - 20x8.5 +25 offset
Rear wheel - 20x9.5 +39 offset

Known fitment issues with Gen5 Zeta Camaro rear wheel on Zeta sedans include tire rub on outer side of tire to body opening. Depending on ride height, vehicle load, and tire size, rub may be minimized, but typically the bead width (9") dictates the proper tire sizes that can be safely used on that wheel. Rub is corrected by massaging the wheel opening - ie. "rolling the fenders".

Looking at the numbers for Gen6 wheels, in both cases (F&R) the wheels are wider AND project further outward as mounted on the Zeta sedan - smaller offset means wheel is pushed outward. As a result, the wider bead width (0.5" greater), especially in rear, means the likelihood of rub is increased compared to Gen5 wheels.

Compare to SS sedan wheel specs (19") - widths & offsets designed for ZERO interference
Front wheel - 19x8.5 +48 offset (positions further inward compared to any Camaro wheel)
Rear wheel - 19x9.0 +57 offset (positions further inward compared to any Camaro wheel)