Well, 215ish because the 70 battery is lighter. The 90D has an EPA range of 285 or so and the range of the 70D is 84% of that where 70/90=78%. So using that 84% on the 257 EPA range you get an EPA range of 215 for the X70D. I'm sure they will release the 70D or 75D as soon as the backlog is smaller.So, yea maybe some day it will get a 70, but what's the guess on range?
257 miles / 90 kWh = 2.8555 miles per kWh
sooo..... 200 mile range on 70 kWh. Ish.
Oh I am quite sure the 85 is not for long, in fact I will be very surprised if it is even offered for the X. The 90 is the new, improved chemistry version of the 85. Sure, it made sense to ask a premium for it for a little while, but as soon as they can get it in large enough quantities, i bet the 85 will be dropped. And at some point it would also make sense to replace the 70 with the new cells too as there is no point in running two different chemistries, unless there is a cost or supply issue with the new stuff. So maybe in 6 months we'll see the 75 and the 90 for both S and X, or the 70 and the 90, but the 70 will have less cells, less cost (for Tesla anyway) and a bit less weight.I think a smaller battery may give up too much range. The 90 is the way to go. Rather than throw a 70 in it later (They really should just kill the 85), and drop the price of the 90 to $1k more... but that's should, and I don't know there costs... so... But I imagine it's easier/cheaper to build 2 of something (70 and 90) than 3 of something... 70, 85, 90.