I recently got a bike with hydraulic disc brakes (Shimano M455 Calipers). I notice when I squeeze down the levers and move the bike back a forth the pads actually move inside the calipers. I normally would not think of this as a big deal but I think it might be causing a noise every time I hit the brakes. Is this normal with hydraulic disc brakes? And if not could this noise be coming from something else? It is usually a tapping/ clicking sound as soon as the pads make contact with the rotor.
Thanks for the help.