In this post in the Van Life Q&A, a user asks:
Is there such a thing as too much van?
I’d think that dirt bike is going to eat up a lot of space, you can’t remove the wheel easily like on a bike.
To get an idea just look at some pictures. Ex:
This comes all the way to the side door of the SWB. You could save some by loading it at an angle and turning the wheel, but it gives you an idea.
what about having the bike on a hitch mount carrier behind the van body?