My local Porsche dealership is offering a highly reduced price for a set of P Zero Corsa's. The catch is they are a pretty old batch (2009). My question is: Would there be any real compromise on performance or is the less 60% price they are being offered at worth it?

 

it depends on how the tires are stored in the last 3 years. if they were kept indoors, i would think they are a good deal.

 

Are they "N" rated?

 

What he said, as long as they were stored properly, they should be good. I use 2007 Toyo RA-1 batch, and they are great.

 

Tires are meant to be bought and driven so they stay supple. I guess it depends on what your safety is worth. I would call the manufacturer and ask an engineer there what they say. I haven't seen any tire engineers posting here. Three year old tires are meant to be ready to discard not installed for the first time.