Subject: RE: Tri bike sizing it's hard to tell, as each person's fit is a little different, but a P2 in a 54" is a pretty reasonable choice for someone your size. But let's say- just for fun, that you are right in the middle and can be fit on either the 54 or 56. On the larger bike, you would need to lower your seat a little bit more, relative to the frame, so your front end would feel like it's a bit 'higher' up. On the smaller bike- your seat would be raised and the cockpit would be relatively lower- allowing your torso and head to be in a lower, more agressive position. so the smaller bike would, all other things being equal, give you a more agressive riding position. torso length, lower back flexibility and arm length (specifically the distance between your shoulder and elbow) are all pretty important measurements- along with inseam of course. If your bike shop measured these parts of you- it's likely that they've picked out the right size. If they didn't- then they might have made a good educated guess, or maybe they're just foisting their stock upon you. But- even if they were nefarious- a P2 54 is a fine steed. |