The E70 had a spare tire option when there was no 3rd row seating. I have too much crap in the back of my truck to take a picture at the moment, however, my E70 has the spare tire option and I recall it is not really a space saver, but I could be wrong, it is just not a wide tire.

I have the Conti DWS on my E70, they were on it when I bought it, seemed to fine in the snow we had in Feb.

__________________
2008 4.8i Black with Tabacco. Black Y-spoke wheels and shadowline trim.