While browsing Vredestein's website, I came across their "tire selector". They don't have Infiniti listed, so I punched in Nissan 350Z and got these numbers:
http://www.vredestein.com/Onlineadvi...ionID=51369441

It looks like they recommend 45 psi in fronts and 42 psi in the rears. Do I misinterpret their numbers? I run 33-35 psi in both fronts/rears per Infiniti recommendations.