Whenever I've changed over from summer to winter wheels&tires I've used the jack that came with the car. runflats=no jack.
The manual sez: "The tools for changing wheels are available as optional accessories from your BMW center".
I assume this means a jack and lug wrench and ... ???
Anyone have a reference to these parts or part numbers or know more? The manual also shows the jack points - any special fitments for jacking up an E90?