Originally Posted by
El_Guapo
I love the bike, but I've had intermittent problems with brake squealing as well and I've had the bike since last year. I think I'll try the alcohol method as well.
It sounds like most of you Trek DS 8.3 owners have trouble with squealing brakes. There is also a thread on this forum from 8.4 owners complaining of the same thing: "Trek 8.4 DS - anyone else have a noisy back brake?". You may want to take a look at it. One guy actually got a new frame out of Trek because of it. But, currently the theory they are testing is that the squealing is coming from the Hayes rotor.
Two of us have Trek DS 8.5's with Shimano Alivio brakes and rotors and neither of us have any squealing.