15x8 steel wheels all around?

I'm running cop car wheels on a '72 Demon with 235/60-15 tires. The wheels are 15 x 7 with 4¼ back spacing. The car has '75 A-body disk brakes. In front, things barely clear. Hitting a hard bump while turning will bounce the tire off the inside of the fender. When I hung the fenders, I went as far out as I could go without creating an unsightly seam at the hood and fender. In the back, the tires are about a ½" clear of the rear spring. At full jounce, the tire will make contact with the inner fender at the rear. Next time I get tires, I plan to go to 225/60-15.