Just to add to the data base. I have a 2018T6, 2800GVW, and had an Eibach/Bilstein lift kit installed. The springs that came off are rear one yellow dot, front one green/one grey dot. The cross sections front went from 16,6 to 18mm, rear spring cross section went from 20,5 to 22mm. For what it is worth. Cheers