I'm 6'3" and I ride a 64cm after years of bike shops telling me the proper size I should be on is a 60 cm. I don't race and I was NEVER comfortable on a 60cm. I believe in high handlebars and a more upright position. My biggest complaint now is it's getting tough to find new bikes that are above 62 and trying to find a mtn bike frame above 21" is getting impossible.