Alc: Yes, some of them do look like they would work. I wonder if I can get them in Canada. If not, shipping will kill me.
bread320i: Yes, it is the 3: center hole that is causing me grief.
Nato77: I am reasonable sure they are 4.5" not 4.25". I've had two shops measure them with the same result. I've also measured them & the bolts are 2 5/8" & 4 1/4" center to center.
Mike Unwin: I'm looking for a second set of rims. The existing set has a pair of 5-12 (loaded) ag tires on them. They are getting repainted. I have a set of 6-12 tires that I'd like to get mounted & have as spares. I think the ones in your link would be perfect. I hope I can find them in Canada.