My replacement lights work with the adaptive gear. The movable parts get transferred over that's how they can be reasonably priced.

Look at your sun roof when going to vent mode mine has something broken and only goes up maybe a cm. Wife's goes Al the way up.

The level sensors attach to the lower arms they don't care if you have air or springs.

I'm not sure how you reprogram if you replace the air with springs.

For me air is a necessity! I have between 40 and 1100# 20-500 kg of tools in the back of my car having a suspension that compensates for that is critical.

I've measured 20mm difference in height before and after loading my car in the back. Also fully loaded the front wheels actually get about 100kg lighter

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)