Put an entire new axle under my Aluminator trailer. The old axle was junk, but it did have new hubs on it. I went from 13 to 14 inch wheel/tires. I would like to carry one of the 13's with the good hub as a spare. I know that they are of a different size, but it is after all a spare for emergency. My new stuff has bearing buddy lube but you never know. Are there after market mounts? If not, I would like to see what ya'll have come up with for carrying a wheel/tire/hub assembly.