I may stand to be corrected on this one, but actually, I think it would be rare if he does have front and rear springs. Isn't self leveling rear suspension standard with Sport Package (S221A) equipped X5's?

I know its a standalone option if you don't have Sport Package though. Calling Quicksilver!

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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