All of these tires are within a few dollars at the retailer with the lowest mounting prices which oddly happens to be the place that we get almost all of our tires done at. The 12.5"s all say that the minimum rim width is 8.5" but I doubt a half inch will make that much difference. Saying that I tend to lean to the 10.5" tires because there is some question of radius arm rubbing too with the 12.5"s.
Goodyear Wrangler Duratrac 33"x12.5"
http://www.goodyeartires.com/tire/wrangler-duratrac/
BF Goodrich All-Terrain T/A KO 33"x12.5"
http://www.bfgoodrichtires.com/tire-selector/name/all-terrain-t-a-ko-tires
BF Goodrich Mud Terrain T/A KA2 33"x10.5"
http://www.bfgoodrichtires.com/tire-selector/name/mud-terrain-t-a-km2-tires
Goodyear Wrangler Duratrac 33"x12.5"

http://www.goodyeartires.com/tire/wrangler-duratrac/
BF Goodrich All-Terrain T/A KO 33"x12.5"

http://www.bfgoodrichtires.com/tire-selector/name/all-terrain-t-a-ko-tires
BF Goodrich Mud Terrain T/A KA2 33"x10.5"

http://www.bfgoodrichtires.com/tire-selector/name/mud-terrain-t-a-km2-tires