It is an aftermarket spare for i3s. Here’s the exact one I purchased:
https://bimmerzone.com/products/bmw-i3-f48-2014-2021-emergency-spare-tire?_pos=1&_sid=9232bd5f9&_ss=r&variant=40049300242599
Got it after a couple tow truck incidents but of course I never got a flat after that.
I have two OEM cupholders from my 2017 i3 that was recently traded in. Cupholders are in excellent condition, $60 each.
I also have a i3 spare tire and wheel that was never used. $140.
i am located near BUFORD, GA - cash only please.