Biggest tire on Stock 67-69 Dart

DudleyDart said
I'm going through the same decision process on my 67 GTS, stock 8 3/4, stock disc/drum brakes, SS springs. I want to go with steel wheels 15x7, 4" backspace... with largest tires in stock wheel wells/location that allow good drivability(not rubbing). Do you think you could've fit the 255 60 15s without moving the spring in, with 4 inch backspace? When I measured, it looked like it would be tight but good.

Also what did you put up front?

Do you have a good side profile pic?

Thanks!!! Mine currently has junk roller 225 70 14s on it. View attachment 1715306276

If I were you, I'd measure what you've got and do the math. Are you changing rearends? If not, do you know the backspacing on the current wheels? It should be simple enough to figure out if you desired tires will fit based on what a tape measure says. I'd use that info way before what someone on the internet says, since all of these cars are a little different in terms of tire clearance.