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I have pdcc. From what I can find online, the tire wear tends to be more even throughout the tire.
I don't have PDCC, and at almost 7000 miles, my 991s rear tires are almost ready to replace. I notice that the wear is almost entirely even from the inner to outer edge which is amazing to me. My 997S would eat the inside edge of the PS2s by 8000 miles and I would see cords by 9000. I once pushed a set to 10k miles and got caught in a rain storm...not pretty.