Originally Posted by
WhyFi
I didn't know the rider's height and inseam, neither did the person to whom I was responding, so the assumption was that he was referencing old-school sizing methods based off of non-compact designs and seat tube length and/or stand-over height, which is a non-issue for the vast majority of people.
Correct. I asked for inseam so that the OP could measure the bike using it's virtual TT and get an actual frame size rather than the sloping TT sizes which are often inaccurate. As I said in a subsequent post, my CAAD 12 is a 53 according to Cannondale but measurement using a virtual TT it is actually a 55. Which fits me perfectly using the LeMond-Guimard formula for sizing.