I just did this to my 88, and the Continental 285/35/18's are 11 1/2 inches wide although they dont look it in the last photo, and they fit way better than I had anticipated, the only hurdle was the heat shield on the turbo exhaust side was a little close to the tire for my liking so I bent it inward. I did alot of measuring for my spacers as to keep the tires in the wheel wells. I bought three long 14x1.5mm bolts at a hardware store then used cpvc as a tube spacer, cut to size, to measure this whole thing up, I was only having spacers made ONCE.
I think I could fit about another 3/4 inch in tire width in there yet.
Last edited by amanda11270; 12-21-2015 at 12:30 PM.