M Factory LSD... 3+ years and just broke

Msport335 · 06-01-2019, 11:55 AM

anyone ever go through LSD warranty with M factory?

how does the process work? rear diff just started knocking.

will need new LSD prior to towing it to shop so mechanic can swap it and i can return the broken one...

hellokitty · 06-01-2019, 01:50 PM

Give them a call on Monday

neilvan · 06-03-2019, 08:33 AM

Do you have a video clip of the knocking sound?

I get a metallic "ting" every time it engages going from a stop or reverse. I've been told that it is normal.

Ozzie335i · 06-03-2019, 09:46 AM

neilvan, unfortunately that noise IS normal. Many people have reported it as a thunk on pretty much every LSD brand, including my own ride (MFactory). I was told that it has to do with the lash. Not sure I buy that if the lash is set properly, but it is what it is. As with SMFW induced chatter, some have said race car.

Msport, you'll have to send in your pumpkin for the repair. The total turn around from the time you pull it out until it is reinstalled could be a couple of weeks, plus. I have to wonder if you have the issue where the ring bolts have sheared, or are in the process of shearing. Do not risk further damage by driving it other than to a shop for removal. You'll need gear oil and might consider changing the bushings if you hadn't already done so.

06-01-2019, 11:55 AM	#1
Msport335 Captain 99 Rep 804 Posts Drives: 2009 335i m-sport e90 Join Date: May 2013 Location: Burlington iTrader: (0)	M Factory LSD... 3+ years and just broke anyone ever go through LSD warranty with M factory? how does the process work? rear diff just started knocking. will need new LSD prior to towing it to shop so mechanic can swap it and i can return the broken one... __________________ E90 LCI M-sport/ 6AT/ LSD/ FBO+
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06-01-2019, 01:50 PM	#2
hellokitty Brigadier General 2945 Rep 3,734 Posts Drives: '17 M3 ZCP DCT Join Date: Jul 2010 Location: Southern California iTrader: (2)	Give them a call on Monday
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06-03-2019, 08:33 AM	#3
neilvan Major 861 Rep 1,371 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	Do you have a video clip of the knocking sound? I get a metallic "ting" every time it engages going from a stop or reverse. I've been told that it is normal.
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06-03-2019, 09:46 AM	#4
Ozzie335i Lieutenant Colonel 661 Rep 1,526 Posts Drives: 2011 335i Join Date: Aug 2014 Location: DFW iTrader: (1)	neilvan, unfortunately that noise IS normal. Many people have reported it as a thunk on pretty much every LSD brand, including my own ride (MFactory). I was told that it has to do with the lash. Not sure I buy that if the lash is set properly, but it is what it is. As with SMFW induced chatter, some have said race car. Msport, you'll have to send in your pumpkin for the repair. The total turn around from the time you pull it out until it is reinstalled could be a couple of weeks, plus. I have to wonder if you have the issue where the ring bolts have sheared, or are in the process of shearing. Do not risk further damage by driving it other than to a shop for removal. You'll need gear oil and might consider changing the bushings if you hadn't already done so.
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