...please... I'd like to know the diameter of a 7.50-16 and 5.50-16 tire. I've got a fella that offered me two 225?-16 tires to mount up and just use for mock up.... I'd like to have 7.50 and 5.50 but beggars can't be choosers ya know....or I could do the plywood thing for the time being, too.. Thanks!