Originally Posted by
cxwrench
That would be terribly obvious. It's either pad movement in the caliper, a loose caliper or a loose rotor. If it were hub bearings putting the brake on would make it impossible to feel.
IME I could only feel it while not riding and locking the brake and "jiggling" the bike foreword and back - there was slop somewhere in the system and it developed over time. Maybe it wasn't the bearings but something else in the hub. New wheels fixed it for me.
edit: slop between the pads and the calipers makes sense, but in my case it was more than that.