I thought the Pirelli's are made in Mexico? 🤔 I don't think Pirelli has a tire factory in China, though. All of their country code origins are RO, MX, DE, IT, and US for the P Zero All Seasons. The tire size specific to the 18" wheels have a country code of MX.
I don't know about Cooper Tires but Pirelli's rubber compound is usually on the softer side, which has it's ups and downs. Same with Michelins, being on the softer side. Bridgestones usually have a better wet traction rating and lasting a bit longer due to it being a harder rubber than the other two brands, but the offset is that it rides firmer, making you feel the bumps on the road more, and getting louder road noise than usual. Other brands have their own variances
So far, I haven't had any incident with the tires. Besides having to do the usual check on the tire pressure every month or so and filling it back up to 35 psi (cold), there hasn't been anything abnormal to them.