Yes, you are right. I am having some custom arms made locally to replace the stock ones. They are 3" longer (giving it 6" of more reach side to side), but otherwise identical to the BendPak ones. They will reach the Tesla jack pads. It's fortunate the BendPak arms are exceedingly simple, so they can be modified fairly easily (or replaced, in this case).
I believe the Tesla pads are about 64" apart, the BendPak arms are 60", so an extra 6" should be more than enough. The one drawback is that the arms won't retract and "store" in the jack without protruding quite a bit from the sides of the jack, so you'd have to remove them if your wheels won't clear, then put them back in when you want to use them.
I may make a shorter set that will clear the wheels when fully retracted, even though they are sticking out. I have a Lotus that has a really narrow wheelbase, so it's a problem for that car if the arms are sticking out at all.