You can set ride height via DIS using two functions. The set zero point function which allows raise/lower by corner or by axle, when you have it where you want it then activate the setting and it will save it as default.

Or you could run a ride height calibration and add/subtract values at each corner to get the desired height, although I don't prefer this method even though it's the original way guys were doing it.

The guy above is right, if you want to lower in half mm increments just take a dump or go for a jog before getting in the X

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards