Winter Storage

I will be putting my 740 IL Sport away for the winter. It will sit until April1st. Are there any special considerations I need to be aware of? Does the oil break down? What about "flat spots" on the tires? Any advice will be appreciated!

Disconnect the negitive battery cable so there is no draw on the battery. Not that there should be but you never know. You shouldnt have to worry about flat spots on the tires and like any other car the oil should be fine.