Thanks to everyone that posted up and filled me in on the tire size. As most of you suggested, I do not have stock AMF wheels. These are 80's BMX mags, which I kind of like.
I picked up some new Kenda tires for them this week and got them mounted last night. I think they look a lot better now that they are cleaned up.
I'm still working on cleaning up the axles and bearings. I hope to have those done soon, so I can put the wheels/tires back on the bike.