Originally Posted by 
Phoenix
				 
			I've spoken to antique tyres about bartreads.  they can get 900x16 for $429, but if you clobber together an order of 20 or more they will give you a club discount.  Might be an option.  This is a firestone tyre.  750x16 are $219 and again, discount for more than 20 in an order.
I haven't looked at the mrf bartread (NDT) as yet, but they seem to be becoming more available in harder to get sizes. The alliance tyre looks good, as it is basically the same as the continental NDT that the unimogs use in the army.