Cars Q&A

Yes they do. In some countries, they might come equipped with the smaller hard rubber spare which will work well enough to get you through to the next place where you can get your original tyre fixed (in case of a puncture, for example).

Both the above answers are pretty accurate.
The tyres are designed to run for about 60kms @ 60kmph even when completely flat (might not hold true on indian roads though) hence can easily get you to the nearest puncture repair shop.
Also in many foriegn countries (I've seen them in the US) the provide a spare tyre (small contact patch and high profile) on a steel rim which serves the same purpose of getting you to the nearest repair shop.

bmw doesn't give a spare wheel because the reason is all the bmw cars tyres are tubeless it is the only and only reason