Originally Posted by
ralphch
Currently though, the stand-over is quite tight: there's basically less than half an inch of space between the top pipe and my crotch, when the recommended distance is around one to two inches. Should this be a cause for concern or a sign that the frame might not be the right size? Even though the next size down, 17.5", might be too small.
IMO, stand-over height recommendations are written by lawyers. I'd be much more concerned about how comfortable I felt
on the bike. I'm also 5'9" and 20" Trek hybrid frames feel perfect to me (the 17.5" feels too small.) If your cycling inseam (not pant inseam) measures 30" or less the 17.5"
may be a better option for you.