Originally Posted by johnny99
A 535 top tube sounds way too small for you. How does the bike feel when you ride it? If the bike is too small and your center of gravity is too far forward, the bike can be unstable on fast downhills.
Once you fit the bike on a frame that's too small (meaning the saddle will be adjusted far back) wouldn't that shift the weight too far back, over the rear tire???
And fwiw, Bianchis seem to have fairly short top tubes, so if in doubt, size up. My 55 is a tad on the short side.