remember seat hight isn't the only variable when you descide fit....reach to handle bar is also very important...by no means am i a fit expert..but 56, 58, 60....you can be between two sizes....if your between three, then your probably in the middle....58..this is the single most important detail in your bike selection, forget about components, if your frame fits like a glove you can change components, but if the frame doesn't fit, you have wasted 400.00 in a bike youll eventually HAVE to get rid off.