Age of tires and blowout

[ranger1850]

I had a note to replace all tires at the end of this fishing season. On my way hope from a trip down south, blowout happen. No one was hurt and all ended up fine. The tires looked brand new, two on trailer and the spare. Tire pressure was correct, checked them cold and added air. I will never go more than 4 years again. Just an old timers advice to all. Again was lucky the trailer never swerved not did I lose any type of control. One last comment you can check the date on the tires to make sure when produced. I talked to young fisherman at ramp other day, he just replaced his tires with brand new ones. I told him to check the date, he said they are over a year old.