Hey all,

Just bought my first bike with disc brakes, a Giant Fastroad SLR 1. I bought it for a specific purpose and it fulfills that purpose very well. I like it.

However I noticed the disc brakes are prone to "chattering". Especially the front. Enough to shake the forks under hard braking. I noticed the outer brake pad seemed to be making weird contact with the rotor. Earlier this week I took it to the LBS that I bought the bike from and they repositioned the caliper position over the rotor. It seemed to help but not for very long. The chattering is back, just at a slightly different frequency. At this point, I think LBS over adjusted the caliper. I think it was too far "out". Now it is too far "in".

Any disc brakes experts care to chime in on this???

TIA