I just searched Pirate the other day and not to many guy's were impressed by the staun inner beadlocks. There was one fellow who had used two street bike tires inside each wheel, this required two extra valve stem holes in each wheel, and the tubes where only $12ea. He said he run down his 42's to 3 psi and have 15-20 psi in the two inner tubes, and never had a problem, this seems cheap and according to this guy they worked well. I am not sure what I am going to do.