Measurement of the rim proves it's 19", though tire markings say 23" I'll check to see if 2.25 will clear the rim. If so, maybe I can snag some rinkys! You're talking about the whitewalls marked 23" right? I wonder what the speed rating is on those. They do look high quality. Have you ever done business with the guy? I mean, if he's the only guy with the tires, then I know what I've got to do, but I'm just curious to know what I'm in for.