[phillyg]

Folks should go with what makes them comfortable. Used to be most ST tires weren't good after three years. But, the newer generation of ST tires seem to be lasting 4-5 years and longer. I'm coming up on 4 years with Sailun, but their born on date is late 2016. I'm okay with another year, but if anyone is constantly worrying if today is the day a tire is going to fail, perhaps it's better for that person to change out earlier.