As a side note, isn't their anything a fit fishy about the PSS not being N rated ?  As Ferdie, mentions, the PSS was developed on the 997.2  and all the mules at the time were fitted with those . 

I can't believe the best road tire from Michelin can't be N rated .......  yes

 

Those new  P Zero N1 look very different from the N0 , maybe you have your answer their ,Carlos .


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 964 Carrera 4 --  997.2 C2S , -20mm --  991 GT3 RS