Originally Posted by obrentharris

I ride this bike more than any other. I call it my "All-Day Bike."



700c Challenge Grifo XS 33mm - very comfortable and versatile tire. I find that at my weight (150lbs.) I have to keep about 60 pounds of air pressure in them to avoid pinch flats in very rocky terrain. On a good gravel road I can drop them to 50, but very few of my rides are less than 50% pavement so I tend to keep them between 60 and 80 psi.
I'm too lazy to air up and air down in the middle of a ride.
Brent