Did own a BMW 1M. One of the best handling cars in the world. 19" wheels... Truly dont understand 21" for anything but looks. Also strange with airsuspension on the +... Add some Öhlins instead. ;-) As I will never use mine for trackdays I see no need for the +. I might have considered it if allowed to go 19". I would say 285 staggered setup would do way more for acceleration but guess they would not fit... That or 4*4. To me it seems tesla have done a very smart packaging to get max revenue out of the different options. Nothing bad but the configuratuon is made to get you to max out the options... ;-) extra equipment very seldom pay back when sold. My config is a maxed out P85 on 19"... Hard to resist. ;-) good business for Tesla as the USD is very low vs the SEK. I will use the 19" and Nokkia Hakka for winter. Then maybe go vossen for summer.