When I first mounted my Kumho, also mounted a new BS 709 on the front, it only lasted 7k and I then went to the Battlax 45. After mounting the battlax I saw no difference in handling of the bike, same as the 709. Now the Kumho has more than 25k on it and the AX has 15k. Kumho is getting near its end, but the Ax has over half the thread left.
