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NUBEEMER NUBEEMER is offline
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Default LSD on a 2008 535xi - 03-18-2019, 07:41 PM

Being new to the bmw performance.. Im getting more knowledgeable as I go.
Im thinking about getting a 2008 M5 rear differential with axles and DS. just wondering if theres anything else that needs to be done for the front differential and if this extreme thinking is possible.i was reading other threads of a addon lsd called quaife . anyinfo would help me alot...





current mods: Vrsf **,inlet/outlet *****, chargepipe w/ bov, Vrsf air filters, mhd stage1 tune, jb5 map 5

Last edited by NUBEEMER; 03-18-2019 at 08:29 PM.. Reason: updated mods
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Default 03-19-2019, 03:17 PM

Still looking for any update on tackling this idea of replacing my 08 535xi rear with a M5 rear.


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BeatupVR4 BeatupVR4 is offline
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Default 03-20-2019, 04:37 AM

The M5 has a 3.62:1 ratio gear set. You didn't mention if your car is manual or auto. If auto it's a 3.46 if manual it's a 3.08. Either way they don't match and you wouldn't want to run one. The only way would be to disable or remove the Xi system like Evan did. (He also did a full auto -> manual swap at I believe the same time)

"Easiest" way I can think of would be to do the M5 rear diff (axles and driveshaft points are the same so reuse them) and remove your front diff, axles and driveshaft for weight savings but leave the T-case in, then take the front axles apart and still use the hub side to keep the wheel bearings together. Then code out the AWD.

You could go "better" from there by swapping to RWD front hubs and struts, RWD oil pan, RWD trans to remove the T-case, but it obviously gets more expensive and labor intensive.

I considered this but I have a manual Xi and I don't want to lose my AWD (I have a winter car but still do live in NH) or go from a 3.08 to 3.62 ratio. I like my cruising RPM and I don't hoon it up enough that the AWD doesn't do a good enough job for me. The almost 400lbs off the car is attractive though.

It would be cheaper and easier to do an M-Factory rear diff which is what I've looked at.

Last edited by BeatupVR4; 03-20-2019 at 04:45 AM..
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Default 03-21-2019, 03:38 PM

thanks for the update.. that info is very helpful. My car is a/m. I'll definitely consider the M5 rear diff with other parts u mention. next question...How would i go about coding out the awd? i got a laptop and obd2 cables ..point me in the right direction and im there..
thanks again


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Default Xdelete my 535xi - 03-22-2019, 07:05 PM

just did a xdelete app on my car.. works amazing. I can disable the xdrive and have just RWD. I can also switch back aswell. it came at a cost of a well reasonable amount for $149.99
I'm so efn ready for my M5 rear differential swap.


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