I ran the kumo runflat for a year. I had great experience with this tire. I live in Fl so I run mostly flat land. I did take that tire on a 2000 mile run through the mountains aggressively. Including the tail of the dragon. I had the kumo on a 2002 Goldwing which I traded in on a new 2015
F6B a little over a year. The dealer gave me the kumo when I traded because he could not sell mine with it on. I have the kumo bagged and will put it on the F6b on next tire change. The kumo worked fine through the twistes. You do have to work a little more on your leans. Safe riding Stevejss