I just replaced my front brake pads on my GSXR and the pads squeak. The rotor also looks to have blue or brown marks on them. What do I do to stop the squeaking?
are the pads glazed? if you have access to a machine shop you might wish to have them surface ground to get the glazing off. your rotors might need resurfaced, too
could be the pads need anti squeal lubricant. New pads sometimes are noisy for awhile until they break in. Ride a couple of hundred miles first and if it doesn't go away have your rotors checked
Buster is correct on this, the bevel on the following edge(back) will allow dirt and brake dust to escape, there is very little clearance and the dirt will make the pads rub and squeak. If it is only like a small hissing sound, as the pads wear in it will go away. Did you bleed the brakes when you put the new pads on? Remember, the old pads where thinner and the pistons needed to extend more and more as the old pads wore, try bleeding the brakes and resetting the pistons, (pump them up to contact). It is always important to bleed the caliper regularly to keep fresh clean fluid in the pistons as the heat of friction(braking) will over time degrade the fluid and make the piston retraction slow and non-uniform on multi-piston set-ups. Sometimes if you do a lot of hard riding, you can slightly warp the rotors and they will rub and squeak no matter what you do. In that case, if you can afford it, buy some floating rotors and install them, they really work from what I am told by people who have them. Best of luck and Ride it like Ya stole it!
Are you certain that you have replaced them with pads compatible with the discs (rotors)? I have a feeling that the blue or brown marks are caused by heat created by a mis-match, although it could be some form of contamination. Brake dust ground off during braking collects on the disc and can cause squealing, give the whole area a good clean with a clutch and brake cleaner. It used to be the case that brake pads were fitted with a generous dab of copper grease at the back (piston-facing) of the pad, but I believe that is no longer necessary, I haven't needed to do that for many years, the copper grease was to reduce squealing.
