No spare tires BMW started using Run Flat Tires which most of
really hate as a result have gone to standard Go Flat Tires.
There are tons of threads in the general forum on this.
You should be aware of the standard set of problems that come with these
covered in the following thread.
https://www.e90post.com/forums/showthread.php?t=1517476
plus this
broken belt
http://www.bimmerfest.com/forums/sho....php?t=1231881
http://www.e90post.com/forums/showpo...3&postcount=23
https://www.oxwerkzperformance.com/
http://www.e90post.com/forums/showthread.php?t=1477111
https://www.e90post.com/forums/showthread.php?t=1305990
There are many thread's on how to upgrade the base stereo system here.