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It appears that the number one cause of premature tire failure is excessive heat build up due to under inflated tires.
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I've seen this statement a lot, too. And I always wonder how anyone knows it to be a fact. After all, if you knew BEFORE the failure that the pressure was low, you would fix it and the tire wouldn't fail. And AFTER the failure - well, the tire is just a hunk of shredded rubber. How do you figure out what caused the problem? Is there some way of doing post-failure analysis that I am unaware of?
When I see this statement, I always read it as the tire manufacturer saying "It must have been your fault, not ours, so we won't be liable for anything."
I agree that tire pressure is extremely important, and that low pressure will cause failure. But it is a long way from there to concluding that most failures are caused by low pressure. But then, I am a skeptic on a lot of these things ...
Bill