Can burnouts structurally weaken tires??

Sorry, more hijacking here... (at least you get a bump)
If tires really "expired" at 5 years, the roads would be littered with cars with blown tires. I think most cars have tires that are older than that.
Tires have gotten better over the years. Used to be, it wasn't uncommon to see a flat being changed. I hardly see anyone doing it now. Matter of fact, people don't even know how anymore. "Call AAA, I have a flat and I'm clueless."