Hi guys,
So I have looked in to this as it exists on my disco 1 300tdi and it seems there are a few simple things to try before we go in to spending money as I've looked all over and this seem to be the main fixes in the following order. I hope this helps
1. Check everything is nice and tight underneath so steering arms, axle bolts, panhard rod, wheels e.t.c.
2. Swap front wheels to rear and vice versa, if this fixes it the wheels need balancing.
3. Check the bushes (pahard rod, radius arms e.t.c) as they may be worn.
4. If you have lift double check you have castor corrected radius arms so for front if its 2-3" lift u need 3 degree, if it 4" or more u want 6 degree.
5. Possibly axle related.
6. Past that point there doesnt seem to be much in the way of what you can do to fix it as everything from what I have listed seems to cure most people's problems. So I advise you to take it too a lr specialist past that point and if they don't know well good luck and let me know the fix as it might be Fubar.
If this helped you can see what I have done to my truck on my insta therugbydisco
