Originally Posted by
pgjackson
Well, what is the "correct" size. I don't think there is one correct size...I believe there is a range of sizes that everyone fits. Generally one-up or one-down. If the OP feels most comfortable on a 54, he will be fine on a 52 or a 56. Anything bigger or smaller will most likely be very uncomfortable. If he finds a great deal and the size is in the ballpark, get it.
Agreed.
Now wrap your heads around this one - 5'7" middle-age woman and her 5'11" teenage son swap bikes all the time and do not adjust a thing....