Nope, not hubcaps, wheel weights, and boy were they a PITA to get on there!
thanks for the positive comments, I spent some time this winter repainting it, but it's a "10 footer" (from 10 feeet away it looks new, not so much up close!
Bob,
they were on the tractor when I got it, sorry I couldn't begin to know where they came from originally, except that I think they're just generic wheel weights......... they're over 100 lbs each, that much I know!