If by “hitch weight” you meant “tongue weight” (the amount of force pressing down on the Model X hitch) it should be between 10 and 15% of the trailer weight when loaded. Assuming that is about 3,000 lbs the tongue weight should be between 300 and 450 lbs.2556 lbs and max capacity is 3500 lbs. Hitch weight should be 10%. Still working on that on our side.
That is indeed basic math. Speaking only for myself, in the real world of towing with an X I don’t think that is the safe or practical approach. I don’t run my battery down to zero or very close to it before reaching my charging destination. I allow a significant buffer to allow for unexpected headwinds or other road conditions that can reduce my range, and reduce it at a faster rate compared to not towing. And the X100D battery only has the range you computed when it is brand new. After a year the range is reduced by 1-2%, sometimes more. That is just the nature of EV batteries.Isn't it straight math that 200 miles at 500wh/mi would be the ballpark we're talking about for 100D battery?
I charge to at least 95%,higher if I have time (like if I’m at a campsite overnight that has power). I do not like to go below 10% to leave a margin, but my spouse doesn’t like to go below 20%.What charge range do you keep for such 150 mile hops? Like down to 10% and then up to 80-90%? I imagine distance between charging points would dictate that often.