The K60 is good tyre but not available anymore, now replaced by the K60 Scout. The Scout is very different from the K60 with respect to center line profile, basically there is no profile in the center as there is a wall all around. My dealer ( 8 times Dakar veteran) declared me crazy if I would take that tyre! So I did not. He is crazy about the TKC80 but I took the Metzeler Enduro 3 Sahara. An other dealer told me he supplied those to a Transalp who drove all the way from NL to Cape Town without change!
My experience is limited, bit noisy in the front, not at all in back.