Last Thursday my 03 G35c brakes made a funny noise when slowing down. I was moving less than 5 mph and ridiing the brake in traffic while coming up to a red light. The brakes sent this loud moan and vibration through the car. It was like some kind of resonance...similar to moving your finger around the top of a wine glass.
I lifted off the brake pedal and reapplied and the noise was gone. This happened twice on Thursday and has not reoccured all weekend. What could this be?