If you're running a 3/4 ton pickup, the 16.5's are still better than anything else you can use. They're a bit difficult to inflate, but most tire shops have a "cheetah" device, which is a small air tank with a big ball valve and a duck bill shaped nozzle that blows a big blast of air into the tire and seats the beads. I still use the old school method of bead-seating tubeless tires- - - -starting fluid or acetylene and a match.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!