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Old 04-27-2017, 09:23 AM   #13 (permalink)
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Originally Posted by CapriRacer View Post
Don't forget about fatigue. In tires, that's the most important thing.

If you look at a typical S-N curve for rubber - and consider that 100,000 miles is about 6 million cycles - then the S-N curve says the failure stress is about 1/4 to 1/5 the static value. If you divide 220psi by 4 or 5, you get 55 and 44 psi. Isn't that interesting!
Of course, they did say the tires were dry-rotted and old.

Don't ever plan on running tires that old.
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