I've been commuting for a few months now and i'm enjoying it.
I ran into my first flat tire, and I brought it to a bike shop since I didn't know how to change the tube.
I was running a Maxxis Detonator 700x28 and they determined if was compromised and replaced it with a gatorskin 700x23
My rim is a Sun Assault SL-1 28/32H.
I ride a Brodie Tesla hybrid http://brodiebikes.com/2009/archive/...=tesla&year=06
Does the change of tire size matter ? I'm told 23c is more efficient, so is this a worth while upgrade?