Do you think they will take the spare tire from the R1T bed due to the huge battery or not.
I doubt it. When I spoke to the R1S team lead last November at the Normal event I had asked him about if the spare tire in the R1S would be a full or space saver spare tire. His first reply was how can you have an adventure vehicle without a full size spare tire. (My reaction: Exactly!) He said he and the team worked to squeeze every inch out of the R1S to fit a full size spare tire. When I asked if that was, at least in part, why the R1S
and the R1T overall vehicle length increased by one to two inches from the original spec sheet, he grinned and said yes.
So, even though that does not "directly" answer your question, I would be very surprised if either vehicle did not have the ability to carry a full size spare tire with any of the battery pack configurations. Given that, if this is a major concern for you, I would highly suggest asking Rivian directly either via email or thru one of their social media site accounts. In a July 24th email from Rivian they stated "pilot production line begins running" meaning the various configurations of the R1T and R1S have been more than likely finalized, meaning I doubt they will make any more changes to either vehicle (unless something extremely minor) and as such they should be able to answer your question with certainty.