Found in a German Forum
:
I am in the process of getting the same
The leather of the performance seats is replaced by the BMW 1M original black leather, so it fits perfect with the rest of the interior. The orange stitching completes the picture. The carbon is real carbon, the grey original plastic is carbon laminated. I will probably paint mine gloss black.
The seat height is equal to the manual seats, so a bit lower then the electric sport seats. However, with some adaptions the seat can be lowered about 1.5cm.