Regarding the ground clearence I found this information:
BMW F30 EfficientDynamicsEdition - 124 mm
BMW F30/F31 - 140 mm
BMW F30/F31 xDrive - 145 mm
BMW F34 - 165 mm
BMW F34 xDrive - 165 mm
So, a F34 with lowering springs is about the same as a stock F30/F31.
Reference:
https://www.press.bmwgroup.com/deuts...che+daten+f34/ ("bodenfreiheit" = "ground clearance")