D78-14 AMC, F78-14 Mopar, Ford and the orange rim I have and some others, E78-14 Chevy and Ford. Might be other Manufactures that fall into each size or tire. This is just a bit of information I came across on the net in the last 30 minutes. Seems like other brand X groups are having some of the same questions come up with this type of Spare tires and rims.