be VERY carefull that you get a rim properly rated. you need a 2500lb capacity rim. I was looking at some Alcoa look alike made by eagle to match thos on my tow rig. They were only rated 1900lb. I neded up going with a rem ver simular if not the same as the current coaches get. I bought the rim with the Goodyears mounted for $149 each. They do need to be ballanced.
Those are correct size and rating with the good tires on them. DO NOT BUY THE LUG NUTS take your and go to a local place. They only stock the 1/2 and on the vintage coaches it's the wrong size. The vintage need the 7/16 size that GM also use on the 70's and 80's 4x4 trucks. About $.75 each from Auto Zone for the nice chrome acorn.