FWIW, I was at the dealer having my Maxima serviced and asked about some of the complaints I've seen on excessive tire wear on the 350Z.
The Service Tech told me that a bulletin is forthcoming on the problem, if not already out. They will swap the two front tires and adjust the alignment/camber stuff to reduce the wear.
I tried to get the upgrade conversion package for my Maxima to make it into a 350Z, but apparently that kit is not yet ready. Guess I'll just have to keep driving the Maxima until I can afford to buy a real one. ;-)
rtt