Just got a new Cayman S with 20" tires (Pirelli 265/35 zr20 95Y) from a dealer in Chicago and when the car was delivered, the tire pressure was like 40 psi for the rear tires. The door panel said it should be 33 so I let the pressure down. Then a few days later I had to take it to the local dealer for a minor issue. When I got it back, the rear tires were at 45!! lbs. So I've been trying to figure out if the official-unofficial recommendation on tire pressure is to go 40+ on the rear wheels but haven't gotten my emails to the dealer answered yet. I am about to take a bit of trip in the car Friday and so was hoping to get some feedback from the community.