Ahh, that is a tough one I have just over 10,000 on the clock replaced the rears at around 7,000. I have had 4 pairs of fronts the last pair I have just put in. This is of course down to the warped discs/rotors at the front and a replacement front wheel as well as the last disc/rotor. I expect Triumph to replace them again when the bike goes in to the factory on the 19th of this month..