I would be a bit careful. I also moved from S to X and wondered 19 inch cyclone wheels for S (19 8.0J) could be used on X, as X has a Tesla genuine option for Winter Cyclone wheel set (19 8.5J).
Not sure why Tesla changed the size of 19 inch wheels, but it could be because the load ratings of the tire. The wider the tires, the bigger the load ratings.