Originally Posted by
Lascauxcaveman
C'mon, guys, it's not that huge. I'm barely 6' with my sneakers on and most of my bikes are that size, and with about that much seatpost showing, too. Some people just have longish legs, and like to get a full stroke in.
Whenever I ride a bike that's theoretically 'my' size (58cm) I've got to jack the seatpost and stem, and it still feels cramped (but racy!).
Based on Miele's sizing during period, it would be a 63cm. If you're riding that size of bicycle with that much post showing you're far from average proportion for someone who is 5"11". If not that, then you're probably over extending your knee and will be a candidate for chondromalacia.