When it comes to tires, a damaged sidewall means the tire is DONE.

Dear Car Talk | Nov 01, 1995
Dear Tom and Ray:
John
TOM: John, get serious! When you damage a sidewall, the tire is garbage.
RAY: You should thank your lucky stars that you noticed the damage and changed the tire before it blew out on the highway and caused you some SERIOUS problems.
TOM: Some of the high end tire makers warranty their tires against damage, even if the damage is your fault. So it would be worth checking with your tire dealer to see if he'll pay for part of the replacement cost.
RAY: But when he tells you to go fly a kite, here's how you reuse your old tire, John. Tie a rope to it and hang it from a good sturdy tree limb in your backyard. Letting the kids use it as a swing is the only duty it's qualified for now.
John
TOM: John, get serious! When you damage a sidewall, the tire is garbage.
RAY: You should thank your lucky stars that you noticed the damage and changed the tire before it blew out on the highway and caused you some SERIOUS problems.
TOM: Some of the high end tire makers warranty their tires against damage, even if the damage is your fault. So it would be worth checking with your tire dealer to see if he'll pay for part of the replacement cost.
RAY: But when he tells you to go fly a kite, here's how you reuse your old tire, John. Tie a rope to it and hang it from a good sturdy tree limb in your backyard. Letting the kids use it as a swing is the only duty it's qualified for now.
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