If what I’ve been seeing on YouTube is true (and it usually isn’t) then the Y actually has the potential to be more efficient than the Model 3 itself. OOS/i1 Tesla did a range test on a PYD+ and got nearly mile for mile rated efficiency (~270wh/mi) at 70mph WITH the ungodly heavy 21” UT wheels. (68lb/31kg per corner)It shouldn't pause you on getting a Y. This is a lesson in making sure your Tesla gets the best range possible over aesthetics. Picking the largest rims possible is a counterintuitive if range is your goal.
I can’t even get that in my P3D+ with the infamous boat anchor 20” stock wheels it came with. I can’t wait to see results on the 19” Gemini’s or better yet on a lightweight forged wheel like the MW03’s.