What is the consensus on the correct modern tire size for a TR250? I know I have seen 205/70R15 and 125/65R15 as a common size on the TR6, but the wire wheel for the TR6 is an inch wider that the wire wheel on the TR250. All 250/70R15 tires I have seen have a minimum wheel width of 5 inches, is 4.5" too narrow?