If they are OEM parts or German aftermarket by the same OEM manufacture than if it were me I would look for collision damage.

You said you just bought a good condition one.

I have a 02 4.4 and I've replace the entire wearable front end and some parts even twice at 95k. Other parts I changed twice with only 10k on them.

There are two sets of front control arms on that model.....see which ones they changed.

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2002 X5 4.4i Sport Wheels
2014 X5 35i M Appearance & suspension package
1995 Porsche 993
1972 Porsche 914-6
2020 GLE 450 Twin Turbo
2019 Alfa Stelvio 500hp Quadrifogilo
Many motorcycles