^When does the sound occur? And what are you hearing?
It sounds like a brake pad touching the rotor when it's turning, it goes away after applying brakes..coming from front brakes
^ and it does sound as what you describing
think i have the same sound^ i just did my front pads barely 500 miles ago and it's making that sound on one wheel, but mines not a constant noise, it tsssk...tssk...tsssk, depending on speed, i used the anti squeal, but mines probably a warped rotor lol never replaced them.