I don't like the design for a street tire that will see any wet driving. I think I read they don't make a left and right version either so the tread directions will be reversed since they do have an inside and out. Either way one side or the other would direct water into the center and trap it by the straight ribs.
khumos are junk, I had them on my last stang and they are the reason I dont own it anymore. Change lanes on a cold day, back end let go, bye bye stang.