OliVR6

Sorry, didn't realise you'd replied. The diff got replaced with a brand new diff from BMW under my RAC Warranty. They also replaced the driveshaft that had burred flat inside the diff. Currently the car is standard but there is a knocking coming from the front when going slowly with a fair bit of lock on. So I'll be getting that sorted and then looking at sourcing some lowering springs/cheap coilovers and getting her lower. Then I'll be looking for a front lip, changing the kidney grills to all black, changing the wing indicator surrounds to black and wrapping the chrome door handle black along with changing the 530d badge to a black example.

So dif has been removed and inspection plate opened to reveal...

Thanks. Sorry I didn’t explain properly. I didn’t actually hit anything, I just thought I had. The garage I took it to is my local Subaru dealership. The reason being; their they only main dealer I trust after they built my forged engine in my previous STI. So I do trust their diagnosis regards it being the diff as they have plenty experience with diffs haha. yeah I’ll keep you updated!

Hi guys and girls, This is my first post here and not one of joy! So happily driving along the motorway and heard a loud thud. I initially thought I'd ran over a stray cone base (cones down the hard shoulder) or hit one of the UK's liberally littered pot holes! After pulling off the motorway and checking the car over, turning the radio down and driving at town speeds I could hear a rotational flat tyre type noise. Got it to a local garage I used, they put it on the ramps and said the noise was coming from the diff, like I've chipped a tooth. Apparently BMW won't repair it under warranty as I've not got BMW approved tyres on! Someone has offered me a 20k diff off a 535i but I'm not sure it'll be compatible? Any recommendations from where to purchase a 530d specific diff?