Driving around Africa flat's are somewhat common so you will find that most any petrol station has people there who fix flats. But if you are out in the middle of nowhere you should have a spare and know how to change a tire. I visually check my tires most every day when driving around Africa. Sometimes you can run over a nail or something and get a slow leak.
I'm old so I'm from an era where every man knew how to change a tire. But if this is new to you, then you should maybe practice or talk to an old man.
