Always cracks in joint C-pillar – Roof?

Forum Modellspecifika forum OG9-5 Always cracks in joint C-pillar – Roof?

  • Detta ämne har 5 svar, 3 deltagare, och uppdaterades senast 2014-11-14 10:52 av .
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  • #8006
    rdebets
    Deltagare

    Hi,

    no, I’m not worried about the cracks in the seam between the C-pillar and roof of my car.

    I’m wondering whether they are always there, on all cars. Does anybody know?

    I’m looking for another 9-5 and virtually all cars have the cracks.
    However, the cars that do NOT have the cracks have an ’almost too good to be true’ paint for a 10 year old car.

    Is a crack free joint a sure sign of a repainted car? I checked for paint thickness on one of them and the thickness turns out to be in the normal range (90-130 um).

    #199075
    rdebets
    Deltagare

    Hi,

    I asked somebody who sees a lot of 9-5 sedans through the year and he said they all have it.
    So if no cracks: re-painted or never driven 😉 .

    #199101
    turbocab
    Deltagare

    No, they dont. Well, my 2001 Aero is 100% original paint and does not have any of the cracks. But, its never winterdriven and have spent very little time in the sun too. I think the sun is the killer here, Im guessing the heating of the roof makes things move and the paint is not flexible enough there. So, above is maybe correct – cars never driven dont have it… But mine has done 140.000 kms, but only in swedish (cold…) summer.

    #199495
    rdebets
    Deltagare

    That is interesting!

    I came across a 9-5 sedan without cracks and checked it with a new paint thickness meter and the paint was within factory spec thickness.
    I was almost thinking that they stripped that car to metal and repainted it otherwise they would never be able to maintain the +- 100 um paint thickness.

    I noted that the underside was also rust free and in very nice shape so maybe it has been sitting in a garage a lot.

    #199499
    Mr_SunBear
    Deltagare

    I belive the craks apears because lack of flexibility in the sealing compound. I have a 9-5 2003 sedan with 240000 km and it have craks on the right side but not on the left side.

    #199621
    turbocab
    Deltagare

    Or maybe the sealing compound flexes very well under the paint, but the paint dont? I would assume that cars with little exposure to extreme temperatures dont suffer the problem so much, at least its the likely reason for my car not having it.

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