I called the Nissan telephone number and got a really smart representative. He informed me that we should use 31lbs pressure on all corners for the 17" tires. I expressed concern that the manual or the lack of sticker on the car has this informataion. He said that he would bring this to the attention of the appropriate people.
I also found out that my ride was constructed on day 1 of production, August 13, 2001! I guess today is it's 3 month birthday.