the traction control is off in the first 5mins of offroad riding, but I did watch one of the dudes from BMW do a quick turn on a mossy/wet road and the traction control kicked in and stopped it from sliding out.
So for eg, if u came round a corner n hit an oil patch that a car has left for you, u won't slip the ass out beyond correction..
so off road traction is off for sure. but road, its a nice to have..
(sorry rmhrc628 I know i have sounded like a bmw sales guy over the last week lol)