I have used kwik trax from kenda on my mtb. For the money's sake, i'd say i may throw them on sometime, but the race king do just fine, they are deadly fast anywhere. If you are not afraid of falling, take it to an skate park, it still goes fast, don't turn...
see what i mean? I don't care about the whole tire technology and theorem. I found this tire to be powerful allrounder, my local bike shops all recommend this and stock this. So what else do i have to say?