It is a different case when the wheel and tire combination are designed for a spacer. There are methods that can be used to eliminate the additional shear planes, bolts and lugs can be sized and selected for the much higher stresses, and the wheels can be positioned where they should be relative to the wheel bearings.

Using spacers on an X5 doesn't just give you a different offset, it gives you the wrong offset relative to the wheel bearing. The correct approach is to use a rim with the proper offset.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue