I don't like driving it on gravel roads as it does not feel composed. A couple of years back when the Box was new to me I was driving on a traffic circle too fast of course and there was gravel on the road. Halfway through the circle the Box was going sideways towards the curb. I have no psm either. Fortunately it stopped going sideways before the exit. It felt like I was on marbles. It was very uncomfortable for a couple of seconds.
G.