It was over exaggerated visually (probably), to show the effect (tyre usage was 100 times faster than normal). I said "road tyre" because I clearly see on the video, that this is a road tyre. I don't need any inside about that. You won't do such a huge flat spot (like you see on this year's super soft Pirelli tyres in F1) on a road tyre with just one or two short lockups. Of course I assume that the physics are for road tyre. 3D model is for road tyre but only the textures are not yet ready for that kind of tyre physics.