But just knowing the calendar age doesn't tell you the useful life of a tire.
Some folks think ten years or longer is OK; others think it is a good practice to change every two years.
We each have different operating conditions which affects the "functional age" of our tires.
I arranged for a poll to be taken on RVTravel.com. It asked the question: "Have you ever heard the phrase 'Tires age out before they wear out?'"
I was pretty sure that many of you had heard the phrase, but now I have the numbers.
If you participated, Thanks!