Originally Posted by
Looigi
I get flats on new tires and flats on well worn tires. I replace when the cords start showing (or if there's structural damage/cut to the cords). Move good front tire to rear and put new on front.
+1
Funny thing: The first year I ran a new pair of Gatorskins on one bike, I had a flat aprox every 6 weeks all year. The next year I had a flat on the first ride in early spring, then no more flats all year. Late that fall I saw cords showing, and discarded the rear tire. So in my experience, I had more flats in the first half of the tires life than in the second. Just shows how arbitrary one persons data point can be.