I have a V8 with a lift and a James Baroud hardshell RTT, get around 300 miles to a tank without the tent and 285 with, planned on keeping it on year but find myself using it from Apr/May-Sep/Oct and storing it in the garage during the winter
This is what my car did after changing the front axles, turns out I didn't quite have the passenger side fully tightened down and caused the front wheel to wobble and rub against the brakes.