If you mount the Euro plate directly on the bumper in the center it shouldn't be an issue. But if it hangs beow the bumper it may be obscuring the Auto Cruise Control sensor. Near the end of this thread is a good photo of the various sensor locations:
http://f15.bimmerpost.com/forums/sho...d.php?t=972683
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F83 M4 convertible, F15 X5 xDrive35i
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