Trailer rims

[JohnB]

I was towing back from the key this week, and had a rim failure. I split/blew out right on the bead. It looks like the wheel weights scraped off the galvanized coating, and after only 5 years, rust right through.

After looking at the other rims, it looks like I am in the market for 4 rims. I was thinking alum, or galv. at the worst case. Anyone know where to get some good used ones, or a source for new ones?

Rims are 5 bolt 14 inch.