Clutch slip or DMF problem?

Are you enjoying making stuff up? I sure as heck didn't assert any such thing.

You don't need to lose all grip on both wheels, you just need to reduce the load on one wheel to produce wheelspin. I'm not saying this is case here though, the driver would have known that it was seriously windy, and would know that that was the cause, especially as he would be struggling to keep it in a straight line. At least, unless he was seriously stupid.

Steve

You suggested it was possible. So just making that up too?

Have you ever driven a low powered heavy vehicle like a motor home on a motorway? It's possible that if you hit a pothole a wheel might loose traction for a fraction of a second - but to suggest that could be confused with wheel spin is, as I said before, bollocks.

If you've got no grip on the front wheels of a motorhome travelling that fast then the engine racing will be very low down the list of things you'l be worried about.