humm sound

hi i have a 3000gt sl and sometimes my brakes make a weird hum sound when stoping. i was thinking it was loss brake pads but dont know. it sometimes happens when its really hot or really wet. ?
what do you think it is.

Have you pulled the wheels and looked at the pads? You might want to have the rotors turned and replace the pads. Or check the bolts that hold the calipers on, remove them and put some grease on the pins.