With the single can and a 31-10.50 tire, my buddy's tailgate is pretty loose on the hinges, and a little hard to close. We do try to dump the 5 gallons in as soon as there is room for it while we are out in the desert. The rig has around 200k miles on it, most of which with the added can mount on the spare tire carrier. I'm pretty sure the mount we used is a "Con-Fer" mount, with the Con-Fer can carrier clamp.