In my car I noticed that the passanger door upper seal (like this : http://www.z3mcoupe.com/forum/showthread.php?t=18423 ) was incorrectly installed and caused some leakage.
The problem was in the front part of the seal in the door hinge area. It is meant that the end part of the lower seal should be sitting below/ become covered by the end of the upper seal. In other words, the top of the lower seal enjoys an umbrella type protection by the bottom end of the upper seal.
Difficult to explain in my limited english skills :)
Anyway, when you look at that joint you can see the ends of these two seals overlapping and the upper seal should be on the top so that any water running along the upper seal outer surface will be directed onto the outer surface of the lower seal. If they are overlapping incorrectly (the lower seal being on the top), the water running along the upper seal can get UNDER the lower seal and find its way to the inner floor of the car.
br, Juha
The problem was in the front part of the seal in the door hinge area. It is meant that the end part of the lower seal should be sitting below/ become covered by the end of the upper seal. In other words, the top of the lower seal enjoys an umbrella type protection by the bottom end of the upper seal.
Difficult to explain in my limited english skills :)
Anyway, when you look at that joint you can see the ends of these two seals overlapping and the upper seal should be on the top so that any water running along the upper seal outer surface will be directed onto the outer surface of the lower seal. If they are overlapping incorrectly (the lower seal being on the top), the water running along the upper seal can get UNDER the lower seal and find its way to the inner floor of the car.
br, Juha
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