I'll be buggered. How do you get a pinch flat with out a tube to pinch???? Please explain????
Sure. If you hit a rock hard enough, the rim drives itself through the tyre case, putting a cut right next to the edge of the tyre bead. It's a real pisser on a couple of levels. Even if you are running sealant in your UST tyre, which costs 50% more than a regular tyre, the sidewall flexes right at the point where the cut is, so it doesn't seal up. And, you can't patch it from the inside because it's so close to the edge of the bead. The only thing you can do is put Supaglue in the cut, and this only works about 50% of the time. I've got a rack full of tyres damaged like this, the only thing you can do is tube them.
Wouldn't this leave him in the same situation as he has with the Magic Mary's? eg going through them more frequently? I have no idea about mtb tyres but from watching a lot of motor sport softer compounds = better grip but much shorter lifespan.
Your motor racing analogy is spot on, the same principle applies. The soft compound Minions grip better, but wear faster. If you look at a used tyre off a fast guy's bike, especially a front, you will see the inside of the outer knobs get undercut, so the knob folds over rather than supporting the rider's weight as he applies pressure on the turn in. The centre knobs are normal height and are hardly worn, but the tyre won't support a fast run.
ound:
