So how many lug nuts does each wheel need?Nismoparts lists them:
Our Price $6.35
Application: For 2003+ 350Z
The lug nuts that are included with this wheel have a 17mm head. The original equipment lug wrench that came with your vehicle will not properly fit this size lug nut. It is recommended that a wheel nut adapter (Part # 40325-17MM) be purchased. If you choose not to use this adapter, an alternate lug wrench will be necessary to fit the 17mm lug nuts. The special lug nuts will work with the original equipment spare wheel.