Mutt wheels

What is the overall diameter of a Mutt wheel/tire combo? Would it be feasible to use them in a civvy trailer application? I have a mil-themed idea, but don't want to give away the plan just yet...

I know the wheel bolt is a 5 x 5.5" pattern; what's the offset?

Finally, does anyone have 5 wheels/tires? Or a source for them?

I've got a few in the yard... I'll go out an measure them in the morning... Located in Raleigh...