So do I need to break out the hammer or what?

[Cerwin Vega Fan]

From what I have been hearing some 18X10.5's will not fit on my car in the rear because it is vert (1995 Z28). I have been hearing people say I could "massage" the fenders out to make them fit. How would I go about doing this? I think busting out a ball ping hammer and going to town on my fenders would not be a good idea.

[MN6WS6]

I have 17X11's on the back of my WS6 with no massaging, no spacers, and they don't stick out of the fenderwell's. I don't know why an 18 with .5" less width would be such a problem, unless your wheel offsets aren't right. If you are ordering wheels, check American Racing's website and use their offsets for the f-body when you order yours. Otherwise you will have problems.

[Cerwin Vega Fan]

The wheels have a 58mm offset and is your WS6 a convertible? Convertible F-Bodys have smaller fender wells.