Space-saver compartment.

[M-technik-3]

Want to have some fun? Put a can of Fix-a-Flat in a tire and take it to get it balanced, and see the techs scratch their heads for a good while. :)

Yeah right it comes up not possible in a nano second. I used to work for NTB as a tire tech while in school. Easy money.

[M3 Ryan]

The Z3 has a small spare up under the rear of the car... look closely at the next one you see and there is a small plastic tray under there that lowers down with a space-saver.

Better than my Dad's ZO6 Vette with nothing at all, becuase Chevy thinks run-flat GoodYears are GoodEnough. Saves weight I guess, like most sports cars...

[EtaSport]

my dad's M roadster doesnt have anything. The dealer removed the 'backup' kit when it was traded so he carries fix-a-flat. my car has a full size, our e28 has a full size, but my sisters Ti has a donut, which we used, then destroyed. its not particularly easy to find a replacement donut unless one pops up on ebay. I dis-like not having a full spare, that spells cheap

[m42technic]

The E46 doesnt have a spare at all. It has that Mobility Kit (a really expensive way of saying "Slime and a compressor."

Only the M3...

[Matto]

I dis-like not having a full spare, that spells cheap

Or freakin small car...

[elemental]

The spare went out the window long ago it landed in the garage.. ;) I have allso thought about cutting it out and flatning the rear so you dont see the ugly thing