Sizing question - can a large frame actually be this comfortable on a small person?
So I'm new to cycling and am loving it completely. I bought an old road bike and have been commuting to work and now want to buy a nice road bike for long rides and races. I am just below 5'5'' and was looking for a 50cm when I was shopping for the old road bike and when I found one it felt too small. The guy I bought it from put me on a slightly larger frame and it felt much better and still feels fine to this day (I've been riding for a month now). However, while gathering the measurements of my current bike to take a guess at what to get for a nicer bike, I've found I'm riding a 56cm frame. Now, I know that in the end it's what's comfortable, but doesn't that seem to big for someone who is just under 5'5''? Any thoughts or comments on this?
In the end, I'm going to test ride a bunch of bikes at work (I'm lucky to work where some nice bikes are sold) and BS with the bike shop guys and figure it out from there, but for the time-being, I'm puzzled. To the best of my knowledge I'm fit to the bike, with the right amount of leg extension while pedaling and not too much of a flat back or too much of a curved back for my comfort (though I've wondered what a longer reach would feel like) so I don't think I'm riding all funky or whatnot.
So once again - any comments that might shed light on this? Thanks!