All the info is here
These wheels were introduced on the 2005 35th Anniversary 350Z. However, Anniversary owners were in for a shock when these came standard on the 2006 and 2007 models on the Base, Enthusiast, and Touring trim levels.
Cost
Expect to pay around $900 or more for a used set in good condition.
2005-2007
Aluminum Alloy
Front
Size: 18x8.0
Offset: +30mm
Weight: 24.4
Tire: 225/45/18
Rear
Size: 18x8.5
Offset: +33mm
Weight: 25.8
Tire: 245/45/18