Had a complete front brake overhaul done last July of '06. Pads, calipers, rotors, grease seals... all replaced on both sides.
For the last month or more I have had a rather high pitched warbling, squealing sound coming from somewhere most noticeable during highway driving where the speeds are 50mph or so. Sometimes there almost continuous and sometimes not that bad. Usually takes 15 minutes of driving to hear it.
Seems to be the front wheels as opposed to the rear. Pressing on the brake pedal about 1/4 of the ways down and it goes away until I release it. This always works to stop it no matter how loud it gets.
At first I thought bearings. Garage (Goodyear) checked and said they were fine. Someone told me check the brake pads. That there is some kind of signal device that rubs the rotor if they are word out.
Took it back and they said pads "had plenty of life left". They said they adjusted the rear brakes and it was now OK. $50 for that. They took it for a ride and "heard nothing".
Sound was there as soon as I drove it the next day. Someone else told me it sounds like glazing of the pads. If they were set too tight on the install they will overheat whild driving and a glaze will result and this squeal is the proof. Confirmed by pressing on the pedal to increase pad to rotor pressure.
Any thoughts?