It's free, no matter where you bought your tires, as long as it's fixable. They are very helpful and just ask if you might consider buying your tires from them when they need replacing, but they certainly don't require it.
That fix flats tire for free and even rotate your tires for free too
I think it's free as long as it's not in the sidewall.
They've repaired my tire for free and I didn't purchase my tires from them at that time.
Its free.. No matter where you bought your tires
If you purchased your tires at an America's Tire with the warranty, they'll take care of it for free. (Likely with replacement if it's big enough.) If you didn't, they'll work with you to take care of it at a low price. They're always reasonable.
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