mickemoose This one stumps me. The front brake(s) on my '05 Corolla LE make a flat tire noise ONLY when I brake going down a steep hill. Sounds like a "wup-wup-wup-wup" noise when brakes are applied. No feedback (pulsation) in the brake pedal which makes this issue even more confusing. If it did, I would suspect a warped rotor. However, when I brake on a flat road surface, I don't hear the noise.Have plenty of stopping ability. The Toyota dealership inspected the brakes on 3-31-11 and said I have 70% brake left. Mileage at that time was 70,372.Current mileage of vehicle is 72,232. Seems a bit premature to have a CV joint go south this early.This is the first real issue I've had with this '05 since I bought it new in October '04. That's a pretty decent track record, I would think!Any help is greatly appreciated!