The wheels on my Tesla hold up the batteries from gravity easily but in a plane you have to continuously lift them, does that change the dynamic?
Cars push on the ground, and the ground gives back all the force applied to it, so no losses here, planes that fly very close to the ground can also take advantage of the ground effect (that's the name) for more efficient lift.
To how much extent, I don't know, but one thing for sure, manufacturers strive to make their planes as light as possible.
As a side note, heavier gliders actually fly a bit better (faster) but unlike powered airplanes, they don't lift themselves.
Edit: added ground effect