14" rim.....what size tire will work best

Here is a picture comparing the stock 13 inch wheels (175/70/13 - tread width 4.9") next to 14x4.5 wheels (185/75/14 - tread width 4.8")

Currently on my car I have 14x5.5 with 205/70s (tread width 5.8" and I feel 215s tread would be 6.4" would have fit as well. On a stock 66 Barracuda