New Maxxis tires are 2 years old???

This thread will be most meaningful to others in the future who find themselves wondering if they should install "brand new" trailer tires that have been sitting in a warehouse for an extended period of time. In my case, the tires are Maxxis M8008 ST type. I am not sure my results (and those of others who responded and had similar situation), will be as meaningful to other brands ST type tires, or to LT type. These are the concerns I had in mind: does the tire life become significantly reduced, and is there greater chance for premature failure of the tires if they are manufactured then set aside in a probably too cold or too hot building for almost 2 years in my case, others similar, then mounted up and finally their work begins. I'm not worried about tread wear, I'm talking blowouts for no explainable reasons. I found the responses very informative. Some day I will try to update this thread and explain how the tires are doing and it will help other people make their decisions. Other than the $100 refund which I felt I should explain, cost has NOTHING to do with the questions I had about the tires. I will air them up to 60psi (probably 60psi anyway, I will research this since I may not be at max load therefore may not need max pressure), I will drive less than 65mph on pavement and also a lot of dirt road/off road, I will visually inspect them often, and over time the answers to these questions will become clear. Then, if any of you get sold old tires you will know how important it is. You'll never have guessed something that I noticed when I walked in my garage and looked at the tires. They didn't really smell. New tires smell, I bought some snow tires for the car last fall, also online, had them in garage and walked in one day and whew, the smell of new tires was so strong. I don't know the date on them, but guaranty I checked, and since I don't remember it must not have been a concern, they were new and smelled like it. I guess if I ever walk in a tire store and can't smell tires I'll know to leave. But after what research I have done, I have a good feeling about using these tires. We will see. Thanks for the help.