Just imagine YOUR cringing when your local tire shop touches these!
One of the major after market accessory suppliers - someone like Griot? - offers a fixture to mount wheels and hang them off the wall for display purposes.
If you get a new GT, you can hang your spares up.
In the more likely case of no NGT, you can buy a set and display them, waiting for the secondary market to develop.
In any event, absolutely stunning!