It definitely has something to do with the tire or your shock absorbers. First I would have the tires on the front, side if you could tell was doing the bouncing. Lift with your leveler one side at a time to clear the ground and rotate the tire. You might have a tire separation and is close to blowing up. Be careful!
2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox