Honestly, as someone with OEM Load level and Adaptive drive, Ive found the load leveling suspension to be invaluable when towing or loading the X5 up with people and cargo. If you can do it and not have it cost you a million dollars, I'd say do it and post it up here. It may be a good resource or alternative for many standard sprung X5 owners with a hitch.

Oddly BMW did not equip trailer hitch/tow package X5's with the Load Level suspension only ones with third row seating. I have had helper springs on an older frontier I used to tow with and had a setup that I used to fill up at the gas station. Worked like a champ.

I also have a Air Lift Setup with the compressor on my F250 when towing a 32' boat. That was almost $1000 bucks (I bought mine off a guy on Craigslist for $400) Took about 3.5 hours to install, a half a case of beer and about $400 in the swear jar but it works well and I can control it from inside the cab.

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2010 X5 3.0 X-drive Titanium Silver/Black
2018 Ford F-150 Platinum Crew
2010 528xi (His)
2017 M2 Manual (His)

Former Headaches:
2008 X5 RIP
2015 M235
2013 135is
2009 535xi Wagon (JUNK)
2007 530xi 6spd CPO Sport (Best Damn Car EVER)
2011 335xi M-sport Coupe 6spd (Sex on Wheels)
2010 550GT "CPO" (Junk)
2012 X5 35d "CPO" (More Junk)
2004 330i ZHP Sedan
2002 325xi Wagon
2000 323i Sedan
1998 M3 Sedan
1992 325i Sedan