4x4 for real adventurers:
On these tours we let it rip! You should be physically fit and technically proficient in using your means of transport.
We won't drive many kilometres a day, but these are tough. The tyres must be M/T or equivalent. A winch and rescue harness will definitely make life easier as we will have them in use every day.
You should have already driven some tours. Preferably you should also have completed a driver training specifically designed for off-road driving.
Safety has absolute priority.