congrats on the new tires!
I will tell you a story: When I first got my car I didn't realize the rear tires were worn. Once I did, I started investigating what to get. I had PZeros. I thought, "I am not getting these again. They s^ck. I put Michelins on all the way around. What a difference! My conclusion: the PZeros themselves may not have been relevant. The extreme wear and probably square nature was the problem! Ha ha. I can be pretty ignant sometimes.