when installing the front flex disc - what is the correct orientation, one face has some writing on it and the other does not. I just installed mine with the lettering towards the transmission, the car is behaving perfect.

But after searching around it seems Ive done it backwards

double check what is written ; as mentioned above for front side otherwise you are ok .
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I had to take it out and flip it for correct fitment, the disc was a lemforder and said deise seite zur gelenkew, loosely translating to this side to drivetrain.

Mine was a soft type flex disc, and after replacing it the car glides into gears.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)