luriaguy

@mountainsofsussex: you can check very easily with open end center lock spanner.

If you are a racer traveling (flying) a lot, center lock is the easiest to remove and mount before flight and after. as your own mechanic it the quickest too. the only time you are lost is changing rotor in a middle of a ride - but hows going to do that any way. the only reason to use 6 hole is an exposure of old fashion stubbornness or lack of manufacturing technology. same applies to chainrings on cranks generally modern technology is a progress concluding previous mistakes or simple improvement. same as we don't get stuck on 26" wheeled solid bike or V brakes or mechanical shifting or Nokia 5010 we should progress to progress in all levels.

Pleas ride all world cups. Having you commentating is like taking two sleeping peals.