Where to buy spare
#2
congrats on the purchase! sorry I cant help you on the spare. Try and call up any of the big tire centers in your area and have them ask around. I would assume dealer is only place and it would be expensive! I personally have never seen a spare like the one I have in my 2008 before.
#4
MBWorld Fanatic!
Are you talking about the spare skinny wheel (19") that goes under the trunk cover? If you need that, I'd take a look on eBay. Otherwise if you want a regular 21" wheel, I too would go on eBay and look for it there.