Interesting story. Very sensational. So are they suggesting that if you buy a tire that's four years old you replace it in two years regardless of tread wear. And BTW tires don't have an "inside" and an "outside". That's a choice you make when the tire shop Asks "white letters out, or white letters in?" Plus what's with accusing the stores of saying the tire is "new" when it's 1, 2, 4 or six years old. If you bought a 2001 car that had never been sold or driven it's still new. So are the tires new. New and old are not opposite terms.
Slanted reporting. And no I don't work in the tire or rubber industry. I just don't approve of skewed reporting.
If you believed every report like that you would never eat in any restaurant. One year coffee and wine are bad for you, the next year they prevent heart attacks and cancer.