i work at a john deere dealership and in our wharehouse we have a set of bands and the hardware for it i asked another guy that has worked there longer than i have and he said that someone wanted to put front and rear duals on a compact then when he figured out the cost of the rims and tires the decied not to at the farm i worked at we had a 580k case loader backhoe and we put rear duals on it we had a welding shop make us a set of bands and it happend to be that combine rims were the right size and we have a tractor junk yard in town so we got a set of rims from them and painted them then we put the old tires on those rims got new tires for the inside and bolted them on at first we used grade 5 threaded rod but we changed to grade 8 fine thread rod if you need more info let me know
i know it can be done i have seen on here a post that someone put front and rear duals on a bota im not shure what section it is under or anything though