Quote Originally Posted by zoom-zoom View Post
Well, the CAAD probably would pick up the same amount, if we're talking an aluminum Synapse vs. aluminum CAAD. Aluminum just tends to be sorta buzzy on roads that aren't buttery smooth. You can ride on wider tires (25mm or wider, vs 23) and keep the PSI in the 100-110 range (vs. 120), which will help with vibration.
It really doesn't. It's a lot smoother than the relaxed-geometry aluminum bikes. DBF has the forerunner to the CAAD series, and has no problems with it on chipseal. There's something about the relaxed-geometry aluminum frames, I think. (Fun fact: I rode a carbon Synapse. It sucked.)