Originally Posted by cyccommute

I’ve seen some really bizarre things at the co-op but this is a first. Someone pulled a tire liner out of an old tire that I thought was one of the kevlar ones. Nope. It was Norton emery cloth, 224 grit. That begs the question of what was it supposed to do? Sand off whatever makes the puncture? Or was it there to keep the tire from creeping at low pressures?