Which is better to fix flint and glass cuts in a tyre - super glue or vulcanising rubber solution? I've been an advocate of the latter - after all, it sticks patches pretty good - but it doesn't seem to stick around () in the cut for long - in fact, whether it's doing any good, I can't tell. It doesn't seem to seal the sides of the cut, or fill any of those star-shaped cracks left by pointy stones. By the next day, you can't tell the rubber solution was ever there. But using superglue? Surely when it hardens, it's the same as having a flint or piece of glass in the tread?