Originally Posted by
Cody Broken
I have pulled out of tires little bits of wire like from a wire brush and I believe they come from the street sweepers.
I think that wire is used for the steel belts in tires. I ride alongside the highway a lot, and I always see truck tire casings with that thin gauge wire poking out in a tangled web. I've picked that same wire out of my tires a few times, and it's caused several flats.