FIX: BMW 3 Series F30 rear foot well/carpets door leak

[@j.williams4180]

I currently have the same problem with my 2017 340...what's the name for the seal.. ?

[@Richie-C]

The vapour barrier came unstuck

[@kef103]

I. Don’t understand it I did this it stopped leaking and now it leaks again

[@jackclear6297]

FYI all this is not the only way water can leak in, I had it from the rear speakers, they (bmw) for some reason designed them so the backs get wet, If the seal around the speaker has gone or you have replaced them with aftermarket speakers with an 'adapter' this can be an issue,.

[@kef103]

I agree it’s absurd for the back of the speakers to get wet by design