Wet passenger footwell?

[Rocky-S]

Had some real heavy rain last night,unlocked the car this morning & the passenger footwell is wet?
Anybody else had this issue & can point me in the direction of any areas to start looking first?
It appears to be coming in between the bottom of the door and then coming in over the plastic trim at the footwell?

[Leslie]

Its been discussed recently for the e70 and but applies to all bmw and is the foam membrane/liner behind the doorcard has come away from the inside of the door and is allowing water to run down the inside.

https://xdrivers.co.uk/forum/viewtopic.php?f=21&t=19402