Thanks guys...all good suggestions.

Barry123400 - Will do a tire rotation and try to eliminate wierd tire tread.Yes, tire guy did have a brief look at the suspension and said it looked ok except for control arm bushing just starting to look soft.

Carlton Hughes - I need to put the car on ramps and have a better look at the ball joints whilst under load.

Vstech - it's only at speed almost as though centrifugal forces also play a part.

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1995 E300 Diesel