Negative camber and toe in settings impact inside tire wear. Negative camber that is in spec is still visible and there is still inside tire wear. If the toe is taken out the handling becomes skittish. If the negative camber is removed turn in and max speed in a corner are reduced. Reducing negative camber will reduce inside tire wear. I think removing toe in takes the fun out of driving and passengers will be grabbing something to hang on.

Lowering, spacers and sometimes rim mods make it harder to get to alignment specs and more difficult to zero out negative camber because the suspension swing arm angle to the road is increased adding negative camber.

Changing spring rate and rebound of shocks could help but is very difficult to verify results. I don't think a better combination is enough to offset the compromise to ride and the majority of inside tire wear happens when driving in straight line.

I am not a fan of adjusting tire pressure because cold pressure and 'hot' pressure vary so much depending on so many variables. The exception would be if tires are filled with nitrogen.

IMO, If better tire wear is the primary goal adjusting out negative camber is the best option combined with tires that have a harder tread rating than spec with road force balanced tires filled with nitrogen.

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