Is it as simple as reading a 4 digit code on the sidewall? I've never looked at that before.
I see '0817' on the Destinations I rec'd today.... some fresh tires, if that is indeed the code.
Yes, it's the 3rd set of digits after the DOT code. It's usually on one side of the tire, the other side will just have two sets of numbers. In your case, it was made in the 8th week of 2017.