A friend in another state runs Carlisle Ultra Guard tires on his skid steers and the front of his 4wd backhoes. He says they are the best tire he's ever run from the standpoint of traction, life and puncture resistance. The lugs are 1 3/8" deep. None of my local dealers sell them. Deestone is the prevalent brand here. I've helped someone install Deestones and it was relatively easy. The Deestones are a 10 ply tire that weigh 50 pounds but the Carlisle's are 12 ply and weigh 100 pounds each. My friend says they are difficult to install and doesn't recommend installing them without a tire changer. I can buy the Carlisle's for $209 each on Amazon. Has anyone ever installed a set of the Carlisle Ultra Guards in 12-16.5? I don't like asking a tire dealer to install tires I didn't buy from him.