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Does your E30 have a Limited Slip Differential? (LSD)

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    Does your E30 have a Limited Slip Differential? (LSD)

    stolen from another forum...but thought it as to be a good reference for some.
    *mods move to appropriate sub forum if required


    U.S. E30s:

    318i/is

    1984-1985 - 3.64 (84 open for Auto)
    1991 - 4.10 (Manual)



    318ic

    1991-1992 - 4.27 (Manual w/ LSD option)


    325

    1988 - 2.93


    325e/es

    1984 - 1985 - 2.79 w/ LSD option
    1986 - 1987 - 2.93 (es = LSD)


    325i/is/ic

    1987 - 1988 - 3.73 (is = LSD)
    1988 - 3.73 (Automatic; iS = LSD)
    1989 - 1993 - 3.73 (Manual; is = LSD)
    1989 - 1992 - 4.10 (Automatic; is = LSD)


    325iX

    1988 - 3.91
    1989 - 1991 - 3.91 (Manual)
    1989 - 1991 - 4.10 (Automatic)



    M3

    1988 - 1991 - 4.10
    1988 - 1991 - 4.45 (rare)


    325i Touring

    3.91 (LSD = option)
    Originally posted by flyboyx
    i have watched my dog lick himself off a few times

    #2
    Moved and also I got to question this. I have a 92 325ic with an automatic and 4.10 gears. Its not a posi and it never came with a posi like this here is saying.

    1992 BMW 325iC
    1965 Chevrolet Corvair Monza 140hp

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      #3
      Does your E30 have a Limited Slip Differential? (LSD)

      I was wondering myself whether I had a LSD myself and chose to apply some real world schooling....


      Yes I do.
      325ic vert.
      Originally posted by flyboyx
      i have watched my dog lick himself off a few times

      Comment


        #4
        Originally posted by JasonC View Post
        Moved and also I got to question this. I have a 92 325ic with an automatic and 4.10 gears. Its not a posi and it never came with a posi like this here is saying.

        I got info from e30tech admin. Figured it's fairly accurate, but I'm sure there is plenty of room for discussion...
        Originally posted by flyboyx
        i have watched my dog lick himself off a few times

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          #5
          When i bought mine before the manual swap, it was an auto '89 325i, but had the 4.10LSD in the back. Granted, it was very tired, but still had the "S" tag.
          Was this a factory option with some sort of package (for the non-is cars) or was it done by a PO?
          1988 Atlantisblau Euro/Japanese 325i Cabriolet
          1989 Schwartz 325i - now M50 powered! - now very dead
          1998 Toyota 4Runner Limited
          My 17,000km Big NA National Parks trip!

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            #6
            My 86 e has LSD. Its a pretty basic model and I don't believe the diff has ever been replaced.

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              #7
              LSD's in E30s are weird, My 89 325i had an open 3.73, my 87 vert had a 3.73 LSD.
              1989 BMW 325is | 2019 Ford Ranger FX4
              willschnitz

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                #8
                They were an individual option for all of them. Every single E30 could be ordered with one (if ordering from the factory, of course). I have a 3.64LSD from an '83 316i on mine. But if you have an eS/iS/M3. They were part of the package.

                *shrug*
                Last edited by TurboJake; 07-18-2014, 01:55 AM.


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                  #9
                  Is there way to tell from the vin alone?

                  Verts really seem to be hit and miss. Friends vert has open diff on his 325ic, whereas mine came LSD.
                  Out of the box open? LSD optional?
                  Originally posted by flyboyx
                  i have watched my dog lick himself off a few times

                  Comment


                    #10
                    Vin decoder perhaps? http://www.bmwarchive.org/vin/bmw-vin-decoder.html
                    Swanny!
                    SUCKERS.

                    Comment


                      #11
                      Originally posted by Mr. Burns View Post
                      Is there way to tell from the vin alone?

                      Verts really seem to be hit and miss. Friends vert has open diff on his 325ic, whereas mine came LSD.
                      Out of the box open? LSD optional?
                      It isn't in the VIN itself, but as long as the lookup retrieves the dealer records, yep. The link Swanny gave does. Just looked myself.

                      The 25% lockup LSD is code S209A
                      Last edited by TurboJake; 07-19-2014, 04:18 AM.


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                        #12
                        I have dumpy 4.10 LSD. It's really worn out though. Not looking to running 4.10 with a manual for daily driving lol.
                        1991 325i - "Scambles" The Daily Driven lightly modded.
                        1988 Mazda RX-7 TII "Mako" The Free Dorito
                        bacon by Jared Laabs, on Flickr

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                          #13
                          My 91 318iS had an open 4.10. So just because it is an iS, doesn't mean it has an LSD, they were still an option.
                          sigpic

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                            #14
                            also the IX Diff's are not true LSD ,they are a viscous coupling lock-up diff (ie the amount of lock depends on the amount of slip) due to the affect of the VC fluid dynamics
                            Angus
                            88 E30M3 X2
                            89 325IX
                            92 R100GS/PD
                            :)

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                              #15
                              Originally posted by NitroRustlerDriver View Post
                              My 91 318iS had an open 4.10. So just because it is an iS, doesn't mean it has an LSD, they were still an option.
                              The 318is was the only one it was an option on the sport package cars. If its a 325es/is, it was standard.

                              I always forget about the 318is.


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