E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Does a 2008 328i have an LSD?



Reply
 
Thread Tools Search this Thread
      01-10-2021, 09:15 PM   #1
dlin708
Enlisted Member
5
Rep
37
Posts

Drives: Bmw 328i
Join Date: Dec 2019
Location: California

iTrader: (0)

Does a 2008 328i have an LSD?

I'm thinking about upgrading to an LSD, just read an article about 2008+ 3ers having an eLSD, and 2006/2007 have an open diff. I got an 08 328i any information on this would be great!
Appreciate 0
      01-10-2021, 09:52 PM   #2
E92William
Banned
1948
Rep
2,026
Posts

Drives: 2008 E92 328xi
Join Date: Nov 2019
Location: Miami

iTrader: (0)

Garage List
2008 BMW 328xi  [0.00]
It is not an LSD per se but an open differential which in its nature, always tries to send power to the wheel with the least resistance which is well, the one with the least traction.

What BMW tried to do here is to have the DSC brake the wheel that's spinning the most (least resistance) and cause it to have more resistance to turn than the wheel that isn't spinning so power is sent to that wheel, it isn't an LSD because you're braking the wheels to control power going to them instead of controlling where the differential sends power through the differential itself without slowing you down.
Appreciate 0
      01-11-2021, 12:59 PM   #3
desertman123
E82 Mudflap Ambassador
desertman123's Avatar
United_States
2060
Rep
2,122
Posts

Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL

iTrader: (0)

Garage List
2008 BMW 128i  [5.00]
2014 BMW 528i  [5.00]
it's "torque vectoring" via the brakes
Appreciate 0
      01-11-2021, 03:04 PM   #4
Biginboca
Colonel
Biginboca's Avatar
2682
Rep
2,276
Posts

Drives: 2009 E92 328i 6MT
Join Date: Jun 2017
Location: Boynton Beach, FL... USA

iTrader: (3)

The way I look at it is this... old time bmws had mechanical LSD and were known for great handling.

Then in the E90 gen bmw implemented the eLSD... while they kept the mechanical LSD in all the M cars.

So ask yourself, if their eLSD was wonderful why would they have never used it in the M cars...
Appreciate 1
E92William1947.50
      01-11-2021, 03:06 PM   #5
bluewater328
Colonel
United_States
570
Rep
2,044
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Quote:
Originally Posted by Biginboca View Post
The way I look at it is this... old time bmws had mechanical LSD and were known for great handling.

Then in the E90 gen bmw implemented the eLSD... while they kept the mechanical LSD in all the M cars. So ask yourself, if their eLSD was wonderful why would they have never used it in the M cars...
Just a cheaper solution for those they feel will never push the limits of the vehicle. Economics.
Appreciate 0
      01-11-2021, 03:08 PM   #6
Biginboca
Colonel
Biginboca's Avatar
2682
Rep
2,276
Posts

Drives: 2009 E92 328i 6MT
Join Date: Jun 2017
Location: Boynton Beach, FL... USA

iTrader: (3)

Quote:
Originally Posted by bluewater328 View Post
Just a cheaper solution for those they feel will never push the limits of the vehicle. Economics.
So you don’t think the M engineers would have substituted the cheaper option if it did the job? They do have Bean Counters at M Division also, like the same ones who stopped Albert Bierman from using the DCT in the F90 M5.

For the record it seems like some implementations of an eLSD can do a great job. Like Mclaren has been using them instead of mechanical ones. But the ones in the standard range bmws are not at that level.
Appreciate 1
Phyrexia491.00
      01-11-2021, 04:46 PM   #7
bluewater328
Colonel
United_States
570
Rep
2,044
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Quote:
Originally Posted by Biginboca View Post
So you don’t think the M engineers would have substituted the cheaper option if it did the job? They do have Bean Counters at M Division also, like the same ones who stopped Albert Bierman from using the DCT in the F90 M5.

For the record it seems like some implementations of an eLSD can do a great job. Like Mclaren has been using them instead of mechanical ones. But the ones in the standard range bmws are not at that level.
I think mechanical is mechanical, and in an enthusiast car, its more of a guarantee/desire. They can add electronic dampening (call it programming) to any car with or without a mechanical diff. So they could heighten with more electronic nannies the controllability of the ///M while eliminating the cost and warranty implications of a more complicated diff.

But same reason that while most car fleets are getting rid of the manual gearboxes, the enthusiast models still readily have them. That's the desire of that profile. I think there was an article recently about the drivability of a Porsche and how people love the stick (even though its slower). DCT (though maybe with a finite lifespan) is way faster/efficient than mortal ability.

Above all that, ///M tech has always lagged behind a generation. Hence the continuance of the E46 ///M during the E90 era and the E90 ///M in the very beginning of the F series. I would say the F series came up pretty quick though...albeit with a bit more grenades.
Appreciate 2
Biginboca2681.50
Phyrexia491.00
      01-14-2021, 09:13 AM   #8
Phyrexia
Resident Pedant
United_States
491
Rep
795
Posts

Drives: '15 335i 8AT
Join Date: Nov 2017
Location: Limbo

iTrader: (1)

My factory F30 LSD blew up after 18 miles. I only post this as a data point and to say: Sup Dudes and Dudettes, long time no see, hope my N52 Family is well
__________________
'15 F30 335i 8AT Estoril II/Black (12.218 @ 114.94mph)
MHD Stage 2+ 93 / XHP Stage 3 / M-Goodies / K&N Filter / ER CP / CSF IC / NGK 97506 / ER DP / Michelin A/S 3+
Appreciate 3
E92William1947.50
Biginboca2681.50
      01-14-2021, 11:41 AM   #9
Biginboca
Colonel
Biginboca's Avatar
2682
Rep
2,276
Posts

Drives: 2009 E92 328i 6MT
Join Date: Jun 2017
Location: Boynton Beach, FL... USA

iTrader: (3)

Quote:
Originally Posted by Phyrexia View Post
My factory F30 LSD blew up after 18 miles. I only post this as a data point and to say: Sup Dudes and Dudettes, long time no see, hope my N52 Family is well
Was that the dealer installed “M Performance” LSD?
Appreciate 0
Reply

Bookmarks

Tags
328i, bmw, limited slip, lsd, open diff

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:55 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST