The car doesn’t have runflats, we didn’t want them. So I’m not sure what would actually be supplied in the boot if the car did have them. I’m assuming nothing, as on runflats the idea is you limp it to the nearest garage. Unless the tyre is completely destroyed.
The space saver is an optional extra you have to pay for with BMW but I don’t know if the jack is included because we bought that or it’s given for free if you chose normal tyres. I’ve taken it out though as I think it’ll make the space saver more sellable! I doubt if they’ll check anyway.