The original tire warranty should be one of the inserts tha came inside your owners manual. I pre-printed the claim form and havent submitted them yet. Although I stopped using those tires 80,000 miles ago due to uneven wear. They only lasted me 20,000 miles.
Nope, I never did mine. 2 of my continentals went about 24,000 miles, the other 2 about 34,000. You can guess which ones were on the back when I first got the car I could have gotten it for 2 of them, but never did it.