Re: 1968 wheel and tire combos
You can probably get some pretty wide tires for 14" diameter rims, wider than for a 18" rim, for example. That's because on the big wheels the tire is low profile and can't stick out much past the rim. If you get too much stick-out though, it gives a balloon look, kind of goofy, imo.
The critical measurement for tire width is wheel width: 7", 8", etc. The wider that measurement is, the wider a tire it can take.
Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.