Unless you have one of the Boondock Lite or Boondock Edge versions of the 2019 NuCamp Tab 320's I would refrain from lowering it any more to the ground. With the stabilizers and sewer drain hanging below the camper this will likely cause clearance issues over speed bumps, hills and entry curbs.
If you have one of the Boondock versions that came with the larger 15" off road wheels and tires you can revert back to the base size wheel and tire like the Castle Rock ST205/75R14 Radial Tire... view full answer...