Sweep_the_Leg Sweep, you don't tell us the year, mileage and past (suspension or other) repairs to your X5.

Even with a conventional suspension, after time & miles or km, your shocks and other suspension parts will need replacement. The X5 had some known bushing & other parts that need attention every 5 to 10 years based on your roads, driving style, wheels (wide 18, 19 or larger diameter wheels will accelerate this).

I have a 2002 3.0 diesel (I live in Europe) with conventional front and air rear. Rear bags showed signs of cracking, so I replaced them proactively with Arnott products. Two hours start to finish, easier than with springs as you don't have to use a spring compressor. Bilsteins (B6 the yellow ones) as well.

I would suggest that repairing your front air struts is not any different as replacing shocks on a spring / shock suspension and WITHOUT the hassle of compressing springs.

Buy Arnott front air struts, easy to replace (they have lots of videos to show you). Look at your rear air springs and if you see visible cracking, consider proactive replacement - it's really quite easy.