Ok, honest opinion, I ran both on the 06 F350 dually I recently got rid of, I was looking at the 19.5's from Rickson and they couldn't deliver and after being put off twice,(it got to the point were Heather at Rickson and I were on a first name basis, I bought a set of 22.5 alcoa aluminum wheels/adapters and Michelin tires due to my impatience,the adapters are so heavy that you couldn't get a decent balance and we tried it in my own shop and then farmed it out to 2 other shops trying to cure the problem, second the 22.5's totally ruined the braking ability of my truck(again to much unsprung weight) and the truck rode like sh*t, in short I wasted a whole bunch of time and money

Called a company called Brentz Wheels, bought a set of predrilled direct fit 19.5's and bought a set of 265/70r19.5 Michelin xde+2 tires and loved it, it gave me the stability that I was looking for towing my boat(which was what started this whole thing) the brakes worked like they were supposed to and the ride was good considering the 14ply tires, and the heaviest wheel/tire I had as far as balance took 4oz.