My D3 TDV6 S has 165000km's on odo. Its been very unstable in the last year or so. First replaced front suspension bushes and then Later Rear too. Its a bit better but I still get too much oversteer at speed. What could it be. PS my Dico would have worked harder than most in terms of towing. I used it often to fetch stricken LR's on a heavy duty trailer. Often vast distances.

 

could be inner tie rods or something else. Have it inspected.