Silly Question - Use 21" spare with 20" AT

[Lizardo]

Hi

Think answer is probably no, but wanted to see if I switched to the 20" AT tires, could I keep my 21" tire as a spare tire if I got a flat on the road?

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[SACDFJC]

On a traditional car I would say yes, but only in a pinch to get you to the shop to fix a tire. On the Rivian with 4 independent motors I'd say run it! Probably not long term but given the independent motors I would do it.