Ugh. "Harley Davidson" is a total deal breaker.
I've got Dunlop Cruisemax on mine, and it says nothing about Harley, thank God! Whitefoot and I were thinking of replacing the skins, but they don't seem to be that old. The black lettering pops beautifully, and it would be a real shame if I couldn't replace them with the same tires.
I know they're Dunlop Cruisemax tires, and I WILL find out where they can be bought eventually. They're beautiful, especially on a fully dressed X.