Hi, I am after a bit of advice. I have an Audi A6 C6 (2008) Avant. It's the S Line Le Man's Edition 2.7 TDI with manual gearbox.

Since I bought it, there has been what I would describe as wheel shudder, much like a wheel is out of balance. I have had the wheels balanced a few times which hasn't fixed it and the tyres are all pretty decent tread wise etc. I've played with tyre pressures and had the brakes all checked over etc... Does anyone have any ideas as to what it might be... At certain speeds it is very noticeable and I really want to try and get it fixed... Could it be driveshaft related or something similar??

You can feel it from lower (30 mph speed) right the way up...

After doing some reading also, in first gear just going straight at very slow speed there seems to have developed a clicking noise recently, it's not always noticeable but there is definately something there....

Many thanks in advance.