[pungo]

Originally Posted by ClampThurst

I replaced both rear bearings today and the noise is gone. Do you recall what the torque spec was on the four bolts that hold the entire hub assembly to the knuckle??? I read 80NM plus 90 degrees. I tried that but could not spin the bolts any more than about 10 degrees. I settled for 110 NM and called it quits-hope it holds

If these are whats you're talking about, the TIS calls for 100Nm and also new fasteners, did you replace them?

[ClampThurst]

Originally Posted by pungo

If these are whats you're talking about, the TIS calls for 100Nm and also new fasteners, did you replace them?

Attachment 2769485
Attachment 2769487

Yes I did replace them..110NM should be plenty then..Thanks!

[bg212]

Mine F.A.G. assembly had instructions inside the box (same as in ISTA).
Depends on the bolts you got:
- original bolts were 1.5mm pitch as that was 80nm + 90deg;
- new assembly had bolts with 1.25mm pitch, and that is 120nm + 90degs.

[ClampThurst]

Originally Posted by bg212

Mine F.A.G. assembly had instructions inside the box (same as in ISTA).
Depends on the bolts you got:
- original bolts were 1.5mm pitch as that was 80nm + 90deg;
- new assembly had bolts with 1.25mm pitch, and that is 120nm + 90degs.

Im thinking the NTN doesn't require that. It was almost impossible to turn it beyond 10 degrees, I felt I would have needed a 4 foot breaker bar to turn it an additional 90 degree.

[bg212]

Originally Posted by ClampThurst

Im thinking the NTN doesn't require that. It was almost impossible to turn it beyond 10 degrees, I felt I would have needed a 4 foot breaker bar to turn it an additional 90 degree.

however a non-scientific observation, but on a high-torque bolts (i.e. not on the oil pan) I always feel that the bolts don't go beyond spec'-ed angle-torque. In other words, I always go slowly, feeling the resistance and checking the angle every now and then - when it won't go anymore, it's typically the angle. Angles are not made randomly up apparently.

So you should be good.

[ClampThurst]

My bearing noise before replacement-sounded nasty.

[ClampThurst]

Originally Posted by pungo

If these are whats you're talking about, the TIS calls for 100Nm and also new fasteners, did you replace them?

Attachment 2769485
Attachment 2769487

Does the manual mention "torque to yield" or additional torque angle on the rear bolts? The folks at FCP Euro referred to these bolts as "torque to yield" in their product review. Im not sure if they misspoke. I believe the bolts for front bearings are 80NM+90 "torque to yield"

[TEF]

A very timely thread. My 2016 X3 28d has become noticeably loud with a droning noise that changes with speed. Initially, I ascribed it to worn winter tires that often drone as the tread wears down. However in reading the above, it sounds (literally) like a worn rear wheel bearing. My car has over 70K miles that also seems to jive with the entries above. Also, it's great to know that *** and Timken are of equal quality.

I have two good local mechanics that could do the work, but my concern is the replacement parts they might use. Some of the stuff from popular parts dealers like NAPA is junk from Cardone. Hope to arrange something that would allow me to provide parts of a known quality.