I find you question very interesting. I am 5'2 (inseam I think, 29) and in a Specialized WDS I ride a 51cm. I felt kind of cramped on a 48. By most of the posts here of ladies about the same height as me, most of them ride a 48.

I felt this kind of odd because I do not consider myself to have long legs. I still have a good amount of seat post showing and wouldn't want any more showing. My handlebars are pretty much inline with my seat. It just always make me wonder about my fit compared to others of my height.

~ JoAnn