Cadillac STS-V Series Forum Discussion, STS-V Wheels in Cadillac V-Series Forums; If any of you want an extra set of wheels.
I did not want some poor CTS-V guy to ...
Yeah in the ad they call them 18",but I can't tell for sure from the photo about all 4. In any case I would be hesitant about buying them from a wheel dealer who doesn't know what they are/have much less being two different sizes.
edit - I called him and he's going to take a look at them to verify size(s), plus he said someone had e-mailed him as well.