Does anyone know if the negative rear camber on the new '07 X5 can be reduced?

80% of my driving is long distance highway so I would like to reduce the large amount of negative rear camber set at the factory to reduce inner tire wear.

I would like around -0.5 verses the -1.5 to -2.0 from factory while keeping the toe-in near factory. I recognize that the handling will be affected with greater oversteer potental, but I'm OK with the compromise. Plus I don't like the sagging rear suspension look from the rear. //-\\

Any info is greatly appretiated

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Carpe Diem