Originally Posted by
johnny99
There is a lot more to sizing and fitting a bike than just the nominal frame size. Different bikes have different geometries which have a big effect on fit. If you don't know what you're doing, you should visit a few local bike shops and test ride the various types of bikes to see what works best for you. Try to visit on a weekday when the sales people can spend more time working with you on sizing.
+1
The whole thing is that the bike fit depends on your body. (i.e. arm length, femur length, torso length, ect.) it has so many factors involved, and your local bike shop should do the work putting you into the appropriate frame size. Find a person who is willing to look at your body dimensions... and then apply them to possible bikes.