Originally Posted by
joe_5700
I currently have a Trek 7200 Hybrid bike. I have had the bike for a year and it has been great. My only complaint is that I would like something more efficient or a bit faster. Are Trek FX 7.2 or 7.3's much faster than my 7200? Would I be better off putting some 28mm tires on my 7200?
There are lots of places on a bicycle where you can pick up tiny amounts of efficiency to make you go a tiny bit faster.
There is one biggie. Once you get above around 15 MPH or so, most of your energy goes to push your torso through the air. Compared to improving your body position on your bicycle, everything else is small potatoes.