Rear Diff is done..upgrade recommendation?

MPG_LOL · 10-27-2022, 09:06 PM

Took my car to Malek recently and he said my rear diff is toast.
The car has 125,000 miles so it's just worn out.

What diff options would you guys recommend?
Car is street driven with some canyon driving and very occasional track use.

CTMike · 10-27-2022, 09:23 PM

Sit down, pour a beverage or two, and settle in to this thread for a bit…

https://www.m3post.com/forums/showthread.php?t=788992

amrazM · 10-28-2022, 05:23 AM

for a street car and an average driver just get another diff from diffsonline, dan will rebuild you an oem type diff and youll be good to go again.

buying a used diff with 70k+ plus miles isnt worth it.

pbonsalb · 10-28-2022, 07:01 AM

Have it rebuilt by a BMW diff rebuilder. If your 2008 diff failed in 2022, you should then be good to 2036.

Consider skipping M Variable. You will find the threads discussing. A rebuild to old school style done right right performs as well or better and lasts longer. I would not jump to one of those expensive aftermarket brands but some think they are great. Worth looking into though. Lots of info in the diff threads.

Scharbag · 10-28-2022, 11:54 PM

E39 M5 ZF carrier is the way to go. Not overly expensive and way better than the M-Variable.

amrazM · 10-31-2022, 06:13 AM

Quote:

Originally Posted by Scharbag

E39 M5 ZF carrier is the way to go. Not overly expensive and way better than the M-Variable.

yeah if you can find one, people arent parting out e39 m5's anymore. i've been looking for an m5 diff for a year now get in line

Scharbag · 10-31-2022, 10:04 AM

Quote:

Originally Posted by amrazM

Quote:

Originally Posted by Scharbag

E39 M5 ZF carrier is the way to go. Not overly expensive and way better than the M-Variable.

yeah if you can find one, people arent parting out e39 m5's anymore. i've been looking for an m5 diff for a year now get in line

I was so lucky to find one locally with a bad pinion. $500CAD for the whole pumpkin. Sold the case for $200 and kept the carrier.

10-27-2022, 09:06 PM	#1
MPG_LOL Private First Class 79 Rep 100 Posts Drives: 2008 E92 M3 6MT Join Date: Dec 2015 Location: Los Angeles iTrader: (0)	Rear Diff is done..upgrade recommendation? Took my car to Malek recently and he said my rear diff is toast. The car has 125,000 miles so it's just worn out. What diff options would you guys recommend? Car is street driven with some canyon driving and very occasional track use. __________________ 2008 M3 6MT. Turner Stage 1 KW Clubsport. MRF Rear Bushings. Monoballs. MPE Exhaust. CF Driveshaft. Titan7 TS5 18in P4S -265F, 285R 2021 Camaro LT1 A10. the DD- Torque baby!
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10-27-2022, 09:23 PM	#2
CTMike First Lieutenant 262 Rep 333 Posts Drives: 2021 X5 40i MSport/2011 E93 M3 Join Date: Jul 2016 Location: CT iTrader: (1)	Sit down, pour a beverage or two, and settle in to this thread for a bit… https://www.m3post.com/forums/showthread.php?t=788992 __________________ -- Gone but not forgotten: 2005 X3 2.5 6spd, 2011 X5 50i, 2015 328d Wagon
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10-28-2022, 05:23 AM	#3
amrazM mTekMods 2157 Rep 2,909 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	for a street car and an average driver just get another diff from diffsonline, dan will rebuild you an oem type diff and youll be good to go again. buying a used diff with 70k+ plus miles isnt worth it. __________________ 2011 Frozen Black/Fox Red E90 M3 650+WHP G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5
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10-28-2022, 07:01 AM	#4
pbonsalb Lieutenant General 5266 Rep 10,652 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Have it rebuilt by a BMW diff rebuilder. If your 2008 diff failed in 2022, you should then be good to 2036. Consider skipping M Variable. You will find the threads discussing. A rebuild to old school style done right right performs as well or better and lasts longer. I would not jump to one of those expensive aftermarket brands but some think they are great. Worth looking into though. Lots of info in the diff threads.
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10-28-2022, 11:54 PM	#5
Scharbag Colonel 2631 Rep 2,142 Posts Drives: 2011 E92 M3 Join Date: Oct 2017 Location: Victoria iTrader: (0) Garage List 2011 BMW E92 M3 [0.00]	E39 M5 ZF carrier is the way to go. Not overly expensive and way better than the M-Variable. __________________ 2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies...
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