Originally Posted by
Dannihilator
You've been lucky then. Seen a rash of "mystery" flats come into the shop, no thorns in the tires, not a pinch flat, and the valve cores were fine. A few of them were because of weak spots in the tube and few were cut where the tube protectors began and ended.
Oh eye see now. You can always put a smooth gradual taper the ends of the liners, helps a lot
