Could you recheck your post, I want to run a 235 or 245 60x15 all the way around. I had 255 60x15 but were to big up front and perhaps in back with suspention travel. Car is just back from paint and is being reassembld,drive train in but not fired, glass in, no trim or rubber or interior. I have owned the car for 23 years and hope to finish this winter.
If you're going to drive it much, or hard, I wouldn't go bigger than 225/60 on the front. I run standard offset 10 spokes with 225/60-15 T/As all around...and the right combination of a bump and a curve will still get the front tire to just barely touch the wheel opening molding.