Greetings that man!

I'm sure there is nothing wrong with Bridgestone Potenza's, dont get me wrong , I don't know whether this is more critical for the newer cars, (My 987 is my first and in all likelyhood only Porsche - still on original tyres -) but all the experts here on Rennteam (and I'm not one of them, I hasten to add) , and my car handbook strongly advise fitting only "N" grade tyres that are designed for Porsche - and the Porsche is designed around them also, of course.