Try to keep in mind that the supports are for the body of the bus. If you look at the body support points it will make sense.
Jacking the axles for tire replacement isnt the same.
I would call a prevost service center and see where the body support points are for a 45. I looked at one in Sevierville and would think it has to be behind the tag, not in front of the drive. I would guess that 60 percent of the bus weight is at the point in front of the drive axle.