Anybody run into warranty issues since they are not N rated?

 

No warranty issues I can think about if you are not using N rated tires.

Although a bit far fetched, some dealers love to attribute problems to non porsche parts.

Only thing is that dealers would be unable to CPO a car unless it has N rated tires.

 

I don't think there are any warranty issues, my dealer is recommending them, and they even installed them on my neighbors 997.2