Oh, pleeeze. No worries.
Yes.
Original tires on these when my car was new were 215R80, which is tiny. When I bought it, it had 225/75R16's fitted, which are still pretty small. 245/75R16 will probably fit OK and they're easy to find. 235/85R16 is a good choice in the modern world if you want bigger diameter. That's about a 32" diameter. The wheels are only 6" wide, which limits tire choices somewhat. I have seen guys mount 285's on a 6" wheel, but that's not recommended by the tire manufacturers and looks odd anyway.
Great for the bush in Africa, but not something I'd put a lot of Interstate miles on. Most tire shops won't touch the split rims anyway.
Nice wheels, but kinda heavy. If the OP's car came with split rims, it probably doesn't have fender flares. These wheels will "poke" a little past the fender on a flareless 80. Subjective as to whether that's a problem, but there it is.
That's a 15" wheel, which would be fine for an early 80, but they probably won't fit with the larger brakes of the later 80's.
Buy a set of the 16's and have a custom wheel shop weld them into 17" rims. Totally doable. For a price.
