DANGER, WILL ROBINSON! 16" tires WILL NOT work on 16.5" tapered-bead rims- - - - - -the shape of the bead seat is completely different and if you manage to get the tire to seal to the rim enough to pressurize, the tire will blow itself off the rim. The rim diameter and the tire MUST match. One of my not-too-bright friends put a tube into a 14" tire so he could inflate it on a 14.5" mobile home wheel. The tire blew off the rim and almost severed his wrist on his right hand- - - -the one that was holding the air hose. A 16.5" tubeless tire will have the same overall height as a corresponding 15" tube type tire. Ditto for 16" and 17.5, 20" and 22.5, etc.
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!