if you got the 4714 from the tire in the indented part near "DOT" that means they were produced the 47th week of 2014. If you plan to move up in size and rating, make sure your wheels can handle the the max pressure of going to load range D. My wheels can't for example, on the inside of the wheels there is a stamp that says not to exceed 55 psi. The Carlisle Load Range C tires I put on have a max cold psi of 50. I believe Load Range D tires have a max psi of 65. It was drilled into my head from my drag racing days to drive slow and keep the max cold psi in the tires and make sure the whe