When braking at higher speeds and locking the brakes there tends (not always) to be noise coming from the front. It kind of sounds like a loud low pitch/bass noise. Not typical grinding or squealing noise with worn out brakes. No noise when turning. Rotors look fine, doesn't seem uneven. Ceramic Brake pads seem fine. Caliper pins are lubed and moving on the slider pins. I don't see any indication of metal on metal contact. The only thing I notice on one wheel is that the caliper goes on just a little tight on one wheel. Which would indicate the wheel hub is a little offset, maybe 1 mm, not sure. But even with this very slight offset, would that really cause the noise? I also notice that when moving the vehicle forward first time in the morning, there is a "click" that comes from the front, it only happens once. Otherwise the car has been braking fine for months. The symptom has not changed though.