Hey, I'm new to this forum, so sorry ahead of time if I posted this in the wrong place. Anyway, I was planning on getting a GT GTR series 5 or 4 online, but the sizes are unusual. It says Large is 53cm and XLarge is 55cm. I'm 6'2", and I fit perfectly on a 58cm Trek 1.1(2012 model). I also drove a 2003 caad5 r800 that was 60cm and I felt pretty comfortable on that as well. From what I understand, the sizing with GT's GTR series is a little strange(like for the large it says 53cm). I couldn't find any bike shops near my house that carry gt road bikes to see what fits me. Basically, would either a Large or XLarge fit me properly, and if so which one would be better? All help and advice would be appreciated. Thank you.