Originally Posted by
Abe_Froman
What he is getting at is that you want the width of the tire, and the outer width of the rim to match as closely as possible. A 25mm tire on a rim that measures less than 25mm on the outside will create unnecessary aerodynamic drag.
No, I understand the points made on aerodynamics (though is there an expense perhaps in less protection of the actual rim from road ruts/scrapes with less or no tire sidewalloverhang?).
I was responding to his part on how a wider rim somehow allows for less inflation and more comfort. I was under the assumption that you are supposed to inflate a tire to a PSI that relates to the tire's actual inflated width, so I'm not seeing how there's a comfort/CRR gain.