My CAAD9 is perfectly silent - except for a very annoying rattle coming from a "shim" on the wire side of the quick release on the rear brake caliper.
See the picture.
Does anyone know how to rectify this rattle?
The "shim" or metal ring seems to be loose, when compared to my DA and Ultegra SL brakes. It makes a rather annoying tingling, ringing noise going over even the slightest road imperfections.
My 105s have this piece. I notice that when the QR is open, there's the slightest bit of "play" in it, but it's pretty snug when the QR is closed. By coincidence, I rode a couple miles with them open (broke a spoke) a few days ago, but I honestly don't remember hearing any rattle from them.