You need to ask them what offsets the wheel are. There will be a stamping starting with ET then 2 numbers on the inside of the barrel. Let us know what they are. Also the hub bore on a F10 BMW 5 series is 72.56 which is the same as your E53 so that will work.

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2002 BMW X5 4.6is soon to be LSX swapped. Silver on Imola

2003 BMW X5 3.0i 5 Speed Manual, Sport Pkg, 190,xxx miles and counting. Black/ Black 20" 4.6is Wheels, OEM Stainless Steps, ZHP Shift Knob