I noticed when I was riding down southern Illionis last fall druing hunitng season of all times my rear break started to squeak. I went to the atv shop down there and bought a can of break cleaner and fluid. the fluild level was fine, I sprayed the rotor down and it stoped the noise for a while but then it came bake? Any ideas are my pads shot or my rotor warped, or some pice of dirt or rock stuck in between the rotor and the pads?

 

pull them out and look how worn down they are