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Trunk disc under spare tire
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Subject: Trunk disc under spare tire
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From: Bob Stommel <Bob@domain.elided>
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Date: Wed, 25 Sep 1996 08:21:40 -0500
>Underneath my spare tire I found a large "disc" which sits between the tire
>and the well. It is made of some sort of fiberglass-looking material and is
>appx. 10 lbs. What purpose does this serve?
It's ballast for winter driving. It supposedly helps keep the light rear
end of a 3-series car from sliding out from under you. (It doesn't. Get
four snow tires.) It is an optional part that can be purchased from any BMW
dealer.
Regards,
Bob Stommel
78 320iS, 88 M3, 95 M3