Picking up an ST on Tuesday. Due to past experiences with Pirelli tires on my wife’s car I am considering the tire/wheel coverage. Had to replace three front tires in two years due to bubbles in the sidewall. The roads in our area really aren’t that bad, and Pirelli refused to stand behind their product. I could understand maybe one tire, but three in two years, really. I have never had this problem with any other tire brand on any of my vehicles. How well do these Pirelli’s stand up?