I had to buy two sets of KM2's.
The first set I purchased were 33x12.5x15 mounted on Cragar Soft 8's 15x8. This set-up is recommended by nearly everyone. I was running 28psi and the tires cupped badly after only 120 miles.
I took them back and the tire guy credited my account. He called BFG. BFG told him that the 33x12.5x15 should be mounted on a 15x10 rim. I brought up the airing down issue and not wanting to pop a bead. They told me I can have my old set-up back and air down to 6psi but they will wear very fast or buy five new tires and new 15x10 rims air down to 12psi and have them wear normally.
License to kill gophers by the government of the United Nations. Man, free to kill gophers at will. To kill, you must know your enemy, and in this case my enemy is a varmint. And a varmint will never quit - ever. They're like the Viet Cong - Varmint Cong. So you have to fall back on superior intelligence and superior firepower. And that's all she wrote.