Originally Posted by
Drew Eckhardt
It depends on how much you weigh. At 200 pounds you want 25mm tires to keep the inflation pressures needed to avoid pinch flats down to 90-95 in front and 100-15 in rear loosing a few pounds a day.
At 140 pounds you don't need 90psi in 23mm tires.
All else equal wider tires have lower rolling resistance, although the fastest designs are only made out to 25mm wide (next year Continental will release their GP4000S II in widths to 28mm).
25mm tires with lower pressure than 23s as a fat guy feel better.
At 145 pounds I would not bother. At 195 pounds I'd definitely get the 25s.
I'm also 195 and run 700x25 Conti GP 4-seasons at 85 PSI front and 95 PSI rear, based on the Tire Drop article, and the measured weight on each tire (using the bathroom scale and a block of wood lol).