Originally Posted by
Retro Grouch
the internal tire air pressure will eventually cause the cut to expand and the tire will eventually blow out. A boot is only a temporary repair. Incidentally, 6mm is a pretty long tear. There are definitely several cut caseing threads in a tear that long.
Eventually a booted tire is going to fail. Your choice is between replacing the tire in the comfort of your home or replacing the tire somewhere on the road.
When I still worked in a shop and was too CHEAP to buy training clinchers (I raced on sew-ups) I always rode on casing-cut clincher cast-offs. My customers kept me in Contis and Michelins for years. My boots were made from old sew-ups (silk, sometimes!) with the tread peeled off. No glue, just air pressure and friction to hold them in place. Never a boot related failure in ~30,000 miles.
Only in the last few years has my stash of tires run out. Oh the agony of paying full price for new tires!
Later
Mel