I'm one of the few Rickson owners who doesn't just rave over how great these wheels are. Don't get me wrong, I like them, I just think that they are VERY expensive for what is mostly a cosmetic upgrade.
I was hoping to get higher gearing, and I did, but it wasn't much higher (only 4%). I did get wheels that are painted rather than shiny aluminum. They are also heavier. This is both a drawback (because of the higher unsprung weight) and an advantage (because they are probably stronger than factory wheels).
I got the Toyo M608Z tires and they will not fit correctly into the spare tire well with the factory hitch. I understand that they will fit with certain aftermarket hitches, but I don't know which ones. Even though the tire won't fit correctly, it can still be cranked up into position against the hitch and frame. It sits a little lopsided, but it rides fine like that. Mine's been there for six months now. Tires that are just a bit smaller will fit.
The advantages, besides the way they look, are greater tire and wheel load capacity and longer tire life. I expect to get over 100,000 miles out of these tires. That will mean one or two sets of factory tires that I don't have to buy. This will add up to enough of a savings that I will probably break even with the Rickson wheels and tires. The second set of 19. 5" tires will yield a savings over factory, but I intend to keep this truck a very long time. If you trade at 100,000 - 150,000 miles you may not see any savings.
The guys at Rickson are first-rate, and will bend over backwards to take care of your needs. I can't say enough about the good service.
Loren