Once a tire wears down unevenly to the point that it needs to be retired from your car, it seems like there’s little that can be done with it that doesn’t involve spinning. They don’t appear to be useful for much else and are often too big to be stored anywhere convenient, so we tend to want to get rid of them right away. That’s partly why approximately 280 million tires are thrown out each year, with only 30 million of
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