Coming from Continental Sport Contact N2 (which imo were excellent tires for the last 2 decades), I wanted to get the pinnacle of tires now, the new and award winning Michelin Pilot Sport 4
S...
...and wasn't able to source them. And neither could a tire shop, nor Porsche (18"). So what to do? Okay, lets get the old Porsche N-certified ones,.....say what?
Conti Sport Contact N2 = n.a. / eol
Michelin Pilot Sport PS2 = n.a. / eol
...."Houston, we have a tire problem"
Long story short, I will get Michelin Pilot Sport 4 (not officially certified by Porsche...whoopedeedoo, and sadly not the 4S) which seem to be the 2nd best choice, imo. In all aspects the better and more modern choice, than the old trustworthy Conti Sport Contact N2. Tire technology evolved A LOT since the last 20 years.

Beats my old Contis in all 3 ratings. Yes, I know...Conti has new and modern Sport Contacts, but also not N-certified. I am trying Michelin now.