Surviving 'Bongo' or just getting around Dar

We wake up to an unpleasant surprise: Our new, used spare tyre is flat -- it burst while parking outside the Safari Inn we stayed for the night. Seems the tyre decide to take us to Dar and give up life straight after that. At least we made it here and can look for a spare... another one. The search begins, through Dar's many shops, mechanics and even the labyrinth of the notorious Kariakoo market