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CNET Car Tech: How to read the specs on car tires

Tires aren't cheap, so understand sidewall specs so you can shop smart.

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Tires, oil, brakes, and gas are just about the only common service items left on modern cars, and of those the tires are the ones most people understand the least. The sides of a modern tire are covered in tech specs that tell you exactly what you're buying--if you know how to read them. Brian Cooley shows you how.