Yeah that tool is no good for the lower ball joint removal as its pressed into the knuckle of the wheel hub. This might be useful as a press to install the new ball joint but as I say, if you clean all the rust out of the knuckle, PB/WD40 the heck out of it, then copper grease/anti seize compound all around the top of the ball joint not forgetting the lugs where the torx go through then when you need to get them out again, should be okay. Now the reason I do all this prep is that I installed mine 18 months ago and now I have a Powerflex bush kit to install on the control arm. So I bought some new Lemforder ball joints as they are on sale at Euros and the likelyhood of me splitting the boot on the ball joints when I remove the existing is hight. For £70 bucks I can fit new ones for peace of mind I get new parts in and don't have to worry about being really careful. I will update you all at the weekend if all my prep to make the ball joint easy to come out works for if its a total SOB again.

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BMW X5 E53 3.0 Diesel Sport | Sapphire Black Dakota Beige Leather interior | Year 2004

What I had updated
Carbon Effect Steering Wheel
Panoramic Sunroof Fix
PVC Replacement
All glowplugs and glowplug regulator
New discs and pads all round
All new front suspension links, bushes and rods