There is nothing personal at all. Projections as I stated earlier are just that projections and can have a vast delta in reality say like Boeing.I do have a question, I sense a little bit of a personal tone here, am I wrong?
You and I may disagree and I appreciate your viewpoint, but as an engineer I stand by what I said. In any design there are multiple design criteria throughout design/pre production. Then they are prioritized and refined. The announcement was probably before final changes, and would have generally been a good target. Obviously it was optimistic. I am guessing once everything is tweaked the real world range may be in the 240 range. So that is a 30% less than announced.
BTW I am pretty sure if you wanted to switch the tires to LRR variant you will immediately gained back 20% of the range at the expense of handling and safety.