There is a reason that I don't spend the money on Michelins any more, out of the four sets I have had two sets developed extensive sidewall cracking. Another set would not balance correctly, my current set will not hold air in two of the tires. It loses 20 psi over two weeks. No apparent issues with the tires they just leak. No punctures etc.
They are the most inconsistent brand of tires I have ever owned.
Coopers on the other hand have served me well for a long time. Firestone have also served me well.
Next set will be anything but Michelins.