Cairo: city of ginormous potholes, surprise speed bumps and nine inch nails strewn across the road

I recently bought a bike. Because, you know, that's what Dutch people do. They bike.
Even in Cairo, where the potholes fit your entire front wheel; speed bumps are in the most illogical places, seemingly pop up out of nowhere and are the size of small hills; and the streets are full of glass, nails and other things that will puncture your tires.
It took only three days before I had my first flat tire. It had a nail the size of my pinky finger in it. The inner tyre didn't just have a hole in it, it was proper ripped.
Good way to get some Arabic practice though, as I now know how to ask "where is the closest bike shop?".