here is the link
BMW Group Australia > BMW Owner > Genuine BMW Accessories > X5 Spare Wheel Carrier > Introduction
problem own here in Australia is that you can be 2000km from a dealer, or even a tyre shop that carries anything other than tyres for a Landcruiser!
I was 2.5 hours from Sydney and had a nail in the runflats on my E92 coupe, and it was going to be 3 days till they could get a tyre. I just got them to put on a standard tyre in the same size(I had to try 4 different shops and drive an hour before I could find one in the right size).
The run flats down here are a stupid price as well. The 20" on my E70 they want close to $1000 a tyre.
I'm going to see how much the wheel carrier is. I its no good, i'm going to go with standard tyres and slime as my backup.