Good video explains a few things

https://youtu.be/COA630Juf_U

Thanks for sharing. Great to see specifics for once, but yes this is something I've been harping on before that there can be quite some differences between the standard tire and OE rated tire. Now that AMG is putting the PS4S on new cars instead of the PSS, I'm hoping that there'll be an MO1 rated PS4S eventually in the 19/20 sizes for the coupe, but for now the standard PS4S is better than the OE rated PSS. I was actually not that impressed with the OE rated PSS. I felt the standard PSS I had on previous cars felt better.