Went to lowes, got 37 bags of drainage rock. Weighed 4 bags to get an avg of 45lbs each. Put the total weight to 1682 + pallet. Drove home about a mile and cycled between aero, normal, and entry. It did fine. Added the wife, 13yr old, and 2 dogs (~340lbs for that). Did the same. Drove, and cycled through modes of entry, aero, normal.
