Caddy vibrates at 140 km/h WHY?

[NZDubNurd]

It's not unusual for the INNER CVs to wear and cause a vibration. It applies to the Tripod type inners, generally fitted to autos - manuals tend to have actual CV, Rzeppa type, which very rarely have the problem.

My experience though, has been you get a "soft" vibration, through the seat, not the steering and generally manifests accelerating more gently, from about 35/40mph to 55/65 mph. It feels a bit rolly, rather than a sharp vibration, like a wheel out of balance.

They are worth checking.

My Wifes Touran has this issue now, on the left side... but the axle is 100% jammed in the trans!

I had to replace the shafts on a golf after they wore so much, the tripod bearing actually collapsed and munched around inside the axle cup! It had the wobble vibration for quite some time before that though.

[3wheeler7]

On my previous Caddy (1.6DSG 2016) I had a bad resonance with slight vibration at 66mph through to 74mph. Finally tracked it down to a duff nearside front wheel bearing - very surprised as it had only done 10k miles!