Noisy BMW 3 series E90 rear diff and axle whineposted on 10 May 2014 | posted in BMW Differential and axle noise
The common rear axle noise found on the BMW E90 3 series cars is caused by bearing failure in the differential unit.
The bearings are an unusual design for a diff bearing as they are double ball rollers, like in this picture below.
They don't really seem up to the job and failure at low mileage is very common
Bearingkits.co.uk can supply E90 diff bearing kits for 316, 318 and 320 up to about June 2008
Please click this link to see our BMW E90 3 series differential rebuild parts range.