Originally Posted by theDreamer

2006 350z
Daytona Blue
Automatic
Just under 60k miles
Stock all around other than we plastidip the wheels to see how they looked black

Current ideas to upgrade (and need help on brands that are good/bad):

Exhaust - Does the 350z have the hiss when you upgrade the exhaust? I'm not sure, but I know that F.I makes an exhaust for the 350Z also, so you can look into that too

Wheels - This I need help on sizing & offset, will stick with 18" & probably something black You can go with the same size as the 370Z. Or
Here are some of the more popular wheel and tire sizes (for good reason) that people put on their Z's. There is no "RIGHT" answer but there is a limit to how big or small you can go.

18" combination:
Front 18" x 8.5" , Offset +15 to +25, Tires 245/40/18
Rear 18" x 9.5" , Offset +15 to +25, Tires 275/40/18
(lower offset such as +10 in rear is possible but may require rolling)

Front 18" x 9.5" , Offset +25 to +30, Tires 255/40/18
Rear 18" x 10.5" , Offset +28 to +35, Tires 285/40/18 or 295/35/18
(lower offset such as +23 in the rear is possible but may require rolling)