First I haven't taken anything apart to look at it. Coming home from the beach I got in my neighborhood and heard my right front brake kinda grinding. I thought well time for pads but I tapped the brakes and it went away. Next day nothing hit the brakes at work got the grinding again after a few taps to the brakes getting out of the lot it went away again. Now I'm thinking I have a stuck caliper. But while on the brakes everything including the sound and feel is normal. I randomly get that grinding noise while braking or coasting. I can't take it apart yet to see whats up I tweaked my neck and it's just starting to feel better. So thought I would get some input on this before I start.