Another view on the noise issue, and more.
 

Here's a different twist on the noise issue, and a real nice overall article too.

Here's a quote from the article regarding the noise issue:
"Apart from some tire roar on rough surface textures, the ride is surprisingly calm and quiet on the public road for such a close-focused sportscar. The 370Z will undoubtedly make a fine grand tourer, particularly with the standard 18-inch wheels and tires."

the article is from: new car test drive.com

You can read the whole article at:

Expert Review: 2010 Nissan 370Z - AutoTrader.com