I lowered my X with H&R springs and rear links that drop it about 1.75 inches. I also have front and rear Eibach sway bars. I have Dinan camber plates and 17mm spacers on 187 staggered wheels. BMW always complains but ultimately gets both front and rear aligned within specs. The only time they could not was just before I rebuilt front and rear suspension. I have them set negative camber aggressively. I have tried many brands of appropriate tires. Until this last set, the best I could get, using my lead foot as much as I can, was around 15,000mi on the rear and 30,000mi on the front. The Michelin tires from the factory were the worst. I have a modded 4.6.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas