like you say - likely cause is wheel balancing! Are you running Cyclones? Notoroiously poorly balanced

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Rallye-R

Nurburgring article

Any movement in the wheels when they are off the ground? Track rod ends and balljoints ok?

Which side CV? Is the middle joint on the drivers side ok?

The intermediate shaft bearing could have been buggered by the CV going. That housing can come loose from the engine too. There will be some movement in line with the engine (push/pull) as they float, but see if you can twist it by hand.

Could also be the clip holding the new CV on has failed and its coming loose from the shaft (had that before). I'd check that shaft.

Damping wear would show up mostly when you hit a bump, not all the time. Especially after some driving as the shock oil has gotten hot and stops working as well. (Hence don't use rubbish dampers)

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Nothing to see here

I take it you're on cyclones?

I had this problem recently, above 50mph the steering wheel would shake like there was an earthquake. Got them balanced @ ats, now smoooooth

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Team Diesel

Did you find a solution to this?

I have the same issue.