My 1960 Bugeye had 155/80R13 tires when I bought it (in 1979). I replaced them with the P155/80R13 size. The factory Workshop Manual says the car was "fitted with 5.20-13" bias ply tires. Some sources now recommend buying 145x13 bias ply tires. Some say 155R13 or 165R13 tires (or 185) are OK. The height recommendations seem to be 70, 75 or 80 without a strong consensus. Has anyone had any problems with running P155/80R13 tires? Does anyone have a strong preference for one of the tire sizes for on-the-street? Thanks.