Wheel and Tire Size Recommendations Wanted - 69 A-Body

In my 68 fastback, I have 15x7 in the front, and 15x8 in the rear. I am running the Mickey Thompson ST sportsman radials with the white lettering on the outside and they look good. No pictures, I'm at work so I'll try to get some up later. 215/70/15 26.7" tire diameter in the front, and 255/60/15 27" tire diameter in the rear. A little rubbing when I go over bumps due to the old worn out leafs in the rear (to be replaced when I get the cash).

https://www.summitracing.com/search...1-polished-wheels?autoview=SKU&ibanner=SREPD5