I've got a 'clicking' that is coming from the rear wheels or drive train. It is speed sensitive and is most notable when you're driving near a building where the sound can reflect off the building back to the car. It also gets louder if you put more load on the wheel by initiating a sharp turn back and forth. It does not change pitch or reduce in volume when the brakes are applied. I can't replicate it in the garage when the wheel is unloaded. I've loosened and re-torqued all of my lug nuts to 140ft-lbs. Bad CV joint? Any other ideas?