Come on now Calvin, there you go again. The first "Look Here" links to a tire company standard which is not a legal requirement. The second "Tire Reg" says nothing about tire replacements, only that "(b) Type. Vehicles should be equipped with tires on the same axle that are matched in construction and tire size designation, and dual tires shall be matched for overall diameter within one-half inch." There is absolutely no mention of replacement tire requirements in that Reg. It is for in use vehicle inspections, which are virtually never done on RV's.
How many time do we have to go down this road? You have never produced an applicable law, be it State or Federal, that supports your position.
Simply post it or stop with all this intimidation nonsense!
Keith