X1 23d vibration (E84)

[ajlouw]

Hi All

Have a bad vibration between 80 and 110km/h coming through the seat not the steering - nothing before 80 and nothing after 110...

Tyres check and balancing and rims checked and all good.

Had rear prop shaft checked by specialists and was found to have no fault.

Any ideas where to continue investigating?

 

[v1p3r]

If you have mismatched tyres front and rear, with a tread depth difference of more than 2 or 3mm the xDrive system can cause vibration through the transfer case. Worth having a look into that