I am thinkin throw some 20 + inch chrome Iroc rims on my 92 camaro, because my Camaro currently sits on some scuffed up bullshit 1984 Z28 wheels:mad: , i hate my 15by7 wheels they are too small. I wona throw some big wheels on my ride, i found some 22" Irocs for a good price, so will it fit my Camaro or it will rub on my wheel wells, and will it thorow my speedometer reading off? Or should i just stay with 20's?

Anything over 18" is will be one heck of a rough ride, and just won't look right. Big rims belong on ghetto SUV's, and tricked out imports.. not muscle cars.

Now some 16x8 Torque Thrust II's would look great
http://www.petepaulsen.com/images/Wheels/ARTorqueThrustII.JPG

18" wheels are big. 22" wheels only look good when they're made from aluminium and are on commercial vehicles.

an 18" wheel with 2-3" of tyre profile will fill the arches more than you need, and they'll give a decently bumpy ride. it'd go with 16-17" wheels for a 3rd gen.

I would be very open to the fact of your suspension when changing wheel and tires up on early to mid 80's GMs. Most have a modiifed McPherson system which is a traditional short long arm set up crossbred with a strut and no upper control arm.

Changes to the wheel size and tire profile dramatically change the how the rest of the system react to the road. Example, I had Goodyear Eagle ST's on my first Camaro with aluminum rims an dth eride was pretty bad, very hard.