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Ultimate guide to replacing vertical window seals on the convertible

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    Ultimate guide to replacing vertical window seals on the convertible

    Like many E30 vert owners, I was getting tired of dust, noise & leaks between the front and rear windows.
    After 32 years the vertical seal between the two windows was shot.

    In fact, the LHS one was missing and had been replaced with some self-adhesive felt - janky!



    Real OEM lists these as Gasket Left & Right (part #12 in this diagram)
    Warning – they’re not cheap!
    But a good investment for another couple of decades if you're going to hang onto your car.

    There’s a lot of misinformation on the interwebs about these gaskets.
    No, the rubber seal is not epoxied or glued in place
    No, you don’t have to buy the rubber seal as part of the rear window
    They can be replaced in under an hour each side - and no need to remove the rear window or rear interior panels as some people think.

    Here’s a quick comparison between old & new.







    The felt wears away and then the rubber part wears and shrinks.


    TO REPLACE:

    1. Open the door, gently peel off part of the door seal and remove the 5mm expanding plastic rivet from the door jam gasket



    Wind the window down...
    There's a small plastic shaft in the rivet that you can either:
    i. Push in from the front (and lost forever in the window well)
    ii. Push out from the back (awkward, but you can catch the shaft and reuse)
    I went with i) as it’s cheap to buy a replacement ( p/n 51161881149)



    2. Remove the lower door jam gasket
    Gently lift up and out, being careful not to damage the gasket
    Have a look where things clip in!
    May need to clean the area depending on filth levels.


    3. Slide out the old window gasket downwards
    Or in my case scrape off the old felt



    (3M adhesive remover made quick work of it)
    Don’t use anything metal as you’ll scratch the anodised aluminium window support.


    4. Slide in the new seal from the base
    Pushing from the bottom and guiding from the top.



    These seals are expensive, so don’t tear then trying to drag from the top.

    Push it home at the base & check the top of the seal sits flush.



    5. Refit lower door jam gasket & expanding rivet
    Ensuring it’s clipped over the top of the door jam panel and under the rubber interior and exterior weather strip trim.



    Done.

    E30 320i vert
    But daily drive is Volvo V60 Polestar

    #2
    Nice! I need to replace mine soon!
    "If everything seems under control, you're just not going fast enough"
    -Mario Andretti.

    ___________________
    River City Bimmers BMW CCA
    2005 X3 3.0i ZPP, Htd seats, Htd strng, Black Sapphire on Terracotta.
    2002 ///M3 Coupe, Steel Gray Metallic on black leather, HK, three pedals.
    1991 E30 325ic, AW, Black Leather, Black top, Three Pedals.

    Comment


      #3
      Very nice! Thank you.
      sigpic

      Comment


        #4
        May i ask how much did you pay for the seals and where did you get them from? I can’t seem to find them any less than $130 per side.
        "If everything seems under control, you're just not going fast enough"
        -Mario Andretti.

        ___________________
        River City Bimmers BMW CCA
        2005 X3 3.0i ZPP, Htd seats, Htd strng, Black Sapphire on Terracotta.
        2002 ///M3 Coupe, Steel Gray Metallic on black leather, HK, three pedals.
        1991 E30 325ic, AW, Black Leather, Black top, Three Pedals.

        Comment


          #5
          Yes, they're not cheap.
          I bought mine from Schmeidmann out of Denmark.
          At today's rate that's about US$105 + shipping.
          E30 320i vert
          But daily drive is Volvo V60 Polestar

          Comment

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