I went round and round about this. I had the original 15" 4.5 rims, and finding a tire at the local tire shops was not happening...with 16's you can find light truck tires. But, even with the 15's my spring clearance at full lock is minimal.
I finally bought some 7.00/15 NDCC's and I really like the look and the way they drive. You get the bias ply bounce until they warm up and get round again. They howl a little on pavement.
I've only got 150 miles on them so maybe it's just a little early to judge...
I have 16" 4.5 or 5" rims on my CJ-5, with radial all weather/all position tires. They work fine, but the tread is not very aggressive...