Just chatted with Rivian to find out if the Max Pack R1T would have lower payload capacity. They reiterated that the R1T payload is 1,764 lbs and the towing capacity is 11,000 lbs. They added that while they keep making improvements to the vehicles and therefore didn't have final weights for all the different variants, they expect the same payload for both packs. Or maybe what they are really saying is that 1764 is the base payload for both to which you deduct weight of options as with any other truck. Given my towing plans, I hope this is the net payload of the higher trim! Thought I'd share.