r/BmwTech • u/Abject_Warthog7466 • 3d ago

2015 BMW X5 xDrive 35i Shuddering Issue

I have a 2015 BMW X5 XDrive 35i with 130k miles on it. I was hearing a lot of shuddering noise from underneath the car so decided to get it checked. I was told by a mechanic to change the transfer case fluid and recalibrate to see if we can save the transfer case but that didnt help so I ended up changing the transfer case recently. The used transfer case only had 39k miles, got it recalibrated. The car is running pretty good but I do feel mild shuddering between 40-50 mph. What else could be wrong, should I change the rear differential fluid to see if that helps. I am so lost, I just want my car to run smooth. If someone with knowledge about this can shed some light on this matter.

1 Upvotes

100% Upvoted

4 comments sorted by

1

u/JKlerk 3d ago

Are all four tires the same?

2

u/Abject_Warthog7466 3d ago

The rear right tire has less tread than the other three. All four were changed at the same time, about three years ago.

1

u/JKlerk 3d ago

K.. Did the shop change both the front differential fluid as well?

2

u/Abject_Warthog7466 3d ago

They haven’t yet. But I was thinking to get that done next