Well you say that, but the placard on my door says 23/22. Now I'm no tyre expert, but I'd hazard a guess that's not right. I presume it's because different countries use different pressure measures.
Mines a UK spec and I can't find anything anywhere about it.
I know that Prodrive used to say use 33psi front and 30 rear. I was really just wondering what other people are using and whether it makes a huge difference to the handling when not on a track.