[avhon1]

Are you replacing the whole tire after every flat? In my experience, that's almost never necessary.

One of my two bicycles is a secondhand Schwinn Loop, a cheap folding bike with 20" tires and an extremely rearward weight distribution. After riding ~1,600 miles on it, I just recently replaced the rear tire because it wore thin. I had gotten 5 or 6 flats on that tire. I was able to keep using it, and tube, by removing the nail/staple/glass and patching the tube. I still have the same tube under the new tire. The patches seem to be permanent fixes.

(My other bike is a 700c hybrid bike from Bikes Direct, which I've put around 3,500 or 4,000 miles on. I've only gotten two flats, patched them both, and still haven't worn out the original tires.)