Originally Posted by
shelbyfv
Check the width of the cranks, side to side where the pedals attach. Wider will of course put your knees farther apart, changing how you interface with the saddle. Measure from the outside of the crank arm to the centerline of the seat tube, both sides.
^^ Bingo. This is the Q factor. It normally ranges from 155 to 170mm. The way you adjust it is with the cleat, but some pedal spindles can also be shimmed if you're too narrow. (No help if too wide.) It only really becomes a problem if you can't move the cleat in or out (EDIT: in/out means from left and right as you sit on the bike. in/out from the crank.) any further and need to. Hopefully that doesn't happen because you'd need a new crank.