Having run in all sorts of conditions from snow, rock and sand, mostly sand, you just have to make sure the system engages, and seem to be fine. I like 2 wheeling a lot. I can 2 wheel the dunes, it is smoother and easier to drive. For Havoc, ran smoothest with 2 wheel drive, posi unlocked, traction control on and off road mode off. Just letting the computer run slippage on first day and did not hurt tires, and handled very well. Second day played with posi, off road mode, traction partly off, and tore up rear tires. Did run 4 wheel on a couple of the hills, and also did it at the night run, to pull out of the corners. Does not steer so well in 2 wheel drive when you are on the brakes.