[MK4 4Motion dangerous in the wet]

1 hour ago, GavinNI said:

It’s not the tyres as I’ve have 3 sets of wheels for it and it does the same on all of them. I’m starting to think the issue lies with the haldex pump itself and continually activating or pulsing. 

Thats very odd then. I wonder if a dyno run will help point you in the right direction. Very interested to find out the cause of this.

[MK4 4Motion dangerous in the wet]

100% that will be your tyres. Get some quality tyres on and you will k ow the difference straight away.