the car I bought came with 17" Pirello P-Zero's. 205/45

What should the tyre pressure be on these?

 

Sure about the size? Anyway, I run 225/40's @ 2.4kpa (cold).

 

definately the right size - 205/45's are what comes with the Prodrive PD7's that were fitted to the car when I bought it 2nd hand. I know a lot of people change them for 215/40 though.

So what pressure's should I be running with the 205/45??