Originally Posted by
Kontact
I'm not sure if you are talking about frame height or using people's heights to predict frame size, but the latter works much better than inseam or any other rule of thumb I've heard of.
Maybe I'm a traditionalist. Back in the day frame size was approximated by inseam. Per people like Greg LeMond and his coach Cyrille Guimard. And others. For example....I am (now) 5'9" with a 32.25" inseam. A friend is 6' with the same 32.25" inseam. We both ride a 54-55 cm frame. His upper body and reach are longer than mine so he has a longer stem. That is not to say that we can't ride a range of frame sizes. But, IMO, inseam is a better prediction of ideal frame size. Has worked well for me over the pat 40 or so years.