I added the spare tire kit when I was optioning my 60- it was a cheap option (€70-80, if I remember correctly..) and I wanted it for added security, as I do a lot of mountain/offroad driving. To my huge disappointment - the full size tire does not fit in the spare wheel tub (and I'm on 19" R wheels..) - so should I have a flat and need to put on the temp wheel- I'd have to stick the full size in the trunk
For me, this is a huge design flaw and it sort of defeats the purpose of having a spare.. White flannel gloves and a bag for the punctured full size are included in the kit though