Join Date: Mar 2011
Location: Orillia, Ontario
Mine are 17"x8" and I have 225/60R17 on there. The stance is just slightly more aggressive than with the stock wheels.
I forgot about the Camaro and the Vette - there's also the newest Lacrosse and some Cadillacs that are on 5x120. I wonder if GM is about to abandon the 5x115 they've had for decades in favour of 5x120. I think there is also the Acura TL (or RL?) that uses 5x120. It is nowhere near as popular as 5x114.3 so your choices are somewhat limited.
One thing to keep in mind is that the lug nuts on the Regal are MASSIVE. Make sure there is room for the lug nuts and the socket in whatever wheel you buy. With my wheels, they have to be pressed up against the hub in order to spin the nuts on. Otherwise, the flange on the nut rubs against the side of the hole and takes paint off.