Properly done it can look both aggressive sporty yet luxury. Not "inflating" my own bubble here however i feel a few good examples are crystalworks now with his new wheels, 525 feen (olek), mine, and a few others im most likely forgetting screen names/arent as active.

The 4.8/4.6 already do that in stock form as well, IMO stock form only thing thats missing is spacers from the factory/lower offset wheels.

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2006 X5 4.8is Fully Loaded