In Reply to: 18 wheel tire fitment? posted by Ritter on January 19, 2001 at 22:30:32:
I think the that 8.5" width is okay but 10" will be pretty hard to fit depending on how low your car is. I don't think it will fit, and certainly won't be able to tuck it nicely.
As far as tires go, I'm using 215/35/18 to be on the safe side. I've heard of people using 235/35/18 but they said there was some fender modification necessary.