This is not a spare but this is one option:
http://www.tirerack.com/accessories/detail.jsp?ID=38
This is an option for a spare:
http://www.bavauto.com/fland.asp?par...%20SPARE%20KIT
I don't do either of these, I just carry a Viair 70P compresser. My leaks have always been slow leaks where a compresser would get me home.
Jim
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128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09