Front brakes were fine. Took off wheel to change tire. Wheel put back on in proper direction. Now front brakes screech loudly and constantly if traveling faster than 10 mph. As soon as I apply any pressure at all to the brakes, the noise stops. When you let off the brake, there it is again. I pulled the calipers back off and inspected them. The pads are fine and there's no sign of rubbing or scoring on the caliper. The rotor looks normal too. I blew everything out with air in case there was just a dust buildup. Put everything back together and nothing has changed. Still screams. Anybody had this problem or have a solution?

 

I like using brake cleaner on the rotors after a tire change because of oil residue from hands etc. Pull the wheel again and look for caliper alignment/position or for any debris that may be there as well.

 

Thanks! I'll give it a try. This is on a ZX9R. There's no alignment adjustment that I know of...just the two bolts onto the fork. Is there something I may have missed?

 

Not really, just make sure the calipers and the pads are aligned. as in not binding

 

Ready??
look at the 2 bolts on the fork. Notice their only on 1 side?
The fork "without" bolts is the main axle mount. Meaning, the axle tightens to there. the other fork just floats on the axle, and uses the 2 pinch bolts for alignment.
So:
look at the rotor disk passing through the brake caliper. it should be "dead in the center". I mean "DEAD IN THE CENTER" of the caliper. If the side with the pinch bolts is not "dead in the center", loosen the pinch bolts and move the fork (with a large screwdriver or pry bar) until the rotor disk passes "dead in the center" of the brake caliper, and retighten. If the side without the pinch bolts is not "dead in the center" of the brake caliper, then you need to swap the wheel spacers or the wheel is turning the wrong direction, flip it around. In this situation, go by the rotation of the wheel, not the tire, in case the tire was mounted backwards.