I find it curious that some K bikes use 17 front / 18 rear like mine, and others do the opposite? Regarding my original post, it has been frustrating searching tire vendor sites, eBay, and Amazon for a matched SET of tires! I find a Shinko front, but no rear, etc. Always one but not the other, Over and over again. What’s up with this, “supply chain”?

I guess quite possibly YES, but still seems odd. Really wanted to try Shinko Podiums or the Battlax T32, in the OEM recommended sizes: 120/70R-17 and 160/60R-18. Shinko does not list a 160/60R-18, really? Still looking……….. 👀. If anyone finds’em, I am not too proud to be shown where!!