What is the load rating on one of those? If you build a carrier you could be close to 200-300lbs pending on tire size and if you add a cargo rack, hi-lift or jerry cans. Also think about the design of the carrier and the thickness of the material your going to use. Mine is close to 175-200lbs. I have just a 33" tire on a steel wheel and going to mount the Hi-lift there soon. I use 2x2x3/16 steel tubing.