That is a 56cm frame, the BMC's run a little big. I am about 6' at 185# and the bike fits really good. Been riding it over a year now (50 - 80 miles/week), very smooth ride with the carbon fork and seat stays, The alluminum frame is stiff, and the dura ace 10 speed shifts beautifully. Never had a problem with it.
Love the bike and glad I was able to find it.