A forum member PM'ed me asking about the fitment of my wheels, specifically how far they stuck out in the rear with a -35 offset on an 18x8 wheel. Instead of emailing him pictures, I figured I put it up here for reference as wheel fitment is a common point of confusion. The car is an '87 converted to coilovers in the rear. All four corners are 18x8 -35 wheels; tires are 245/40/18 rear, 225/40/18 front.
I feel like -35 is ideal for the rear but the fronts could probably -40 to -48 to look ideal, although I'm not sure if there would be any fitment issues. Maybe someone can chime in. He also asked about how wide of a tire could be run without hitting the coilovers. I can't comment on this specifically as the car is in storage and I don't recall exactly how much space was back there but in my opinion, on an 8-inch wide wheel, a 245 is already 9.65 inches wide. Maybe you could do a 255 or 265 but anything beyond that would require a 9 or 10 inch wide wheel, which would only work dependent on the coil clearance.
Hope this information was helpful!
------------------My turbo build
[This message has been edited by ConvictedRedneck (edited 01-19-2015).]