Infiniti G37 wheels will bolt onto other vehicles, and when installed them on my 2008 Accord Coupe they vibrated even with the proper aftermarket hub spacer.
Turns out G37 wheels have an exceptionally deep hub chamfer and my Accord has quite short hubs that weren't engaging the wheel hubs, only the spacers were engaging and they were cracking and causing vibration if the wheels weren't properly put on (every shop that touched my car broke spacers).
These spacers engage the wheel chamfer and space from the Honda 64.1mm hub to the Infiniti 66.1mm hub. And will probably adapt G37 wheels onto other Hondas as well- only tested to work on a 2008 Accord.
Price is for one (1) spacer.