I just had my left front air strut fail, and I had the same clunking. Also, during one mildly hard stop, my front left locked up, which is when I noticed the problem initially. I would try to raise the suspension everytime I dropped below 30mph to keep it full with air. That lasted for about 2 weeks, before I was driving down the Turnpike and noticed I was feeling every single crack and bump in the road. I pulled over and noticed that my front left fender was sitting about 1/2" above the tire. Time to call AAA...

Does anyone know what needs to happen after I replace it with an Arnott strut? Something about a ride height adjustment? Is it mandatory?

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2006 BMW X5 4.8is - Black Sapphire/Cream Beige
2001 BMW 330i - Alpine White/Beige (retired)