Have to agree there. We have a set of 2 roller bags that we could fill to the top and slide under the strut of the 350z, so for a weekend we had 2 full bags out of sight. In the 370z, because the strut is inverted, the boot floor is raised, so we cant fill the bags anymore as they wont fit. Also dont quite fit in next to each other, they touch the plastic finish now whereas they fit between the strut just fine in the 350z. Also where we now dont have it enclosed, on the UK car you get a roller blind thing, and with bags in the back (not even full) its very obvious there are bags in there.
Also agree with the tyre noise. If you roll on smooth tarmac it completely dissapears. I would guess a combo of noisy tyres and harder bushes than the 350z is what causes it. Can wait to get them off an get some PS3 or similar on there to see if that takes it away.
Can the road noise not also be down to the arch linings and sound deadening? I can hear every single little stone being picked up by the tyres and hurled at the arch lining whereas my Audi is silent on the same piece of road.
I also have to agree with the boot, the best option is a heavy tint on the rear window, still that doesn't sort the boot capacity which is tiny!