2019 Q5 quattro S Line 40tdi

Started a few months ago; feels like the wheel/tyre is not in syn with the os/f

Results in a scrapping dragging feel and noise. Only from cold and once on the move no problems.

W to my local guy who said all front mechanical looked good but suspected Diff problems.

Took it to an audi specialist who suspected dif gearbox needed an oil change ( previous Audi advisory)

This reduced problem by about 80% and changing my driving from start up to avoid hard lock helps a lot.

Went back to specialist who said only thing to do is disassemble diff etc to have a look.

16 minutes ago, Mandolin said:

Went back to specialist who said only thing to do is disassemble diff etc to have a look.

That sounds like a good plan. I hope you have a fat wallet as it is never advisable to ignore warnings related to 4WD transmissions.

Update on the jumping problem.

Decided to get new tyres all round Conti P6 and a wheel alignment 

Sorted the problem.

Tyre garage said its a common problem on big cars

Thanks for letting us know. I am surprised that faulty wheel alignment was not detected earlier because the symptoms are easy to detect. The inner or outer shoulders of the tyres are scrubbed off depending on whether the wheels toe in or toe out.