Not sure if you can still get it, but BMW used to sell a sort of deluxe "Sport Toolkit" through their dealer network that was very well equipped. I'm not much of a fan of over-ther-counter solutions but this is one I'd recommend. I've had mine since the early '80's and it's still my do-anything toolkit for travelling on an airhead. Add a rotor removal tool and carry a muti-meter you're ready for almost anything.
Bob Loblaw (read it out loud)