I recently had a complete brake job done on my 2000 wagon at about the
50,000 km mark.
I've been dealing with the same brake shop for years, and have come to trust their opinions. They told me the Focus, like many other small cars, comes equipped with thin rotors and drums, and light duty calipers and pads. They speculate this is to keep vehicle weight to a minimum, so it can meet higher fuel economy standards. That sounds plausible, but who knows?
At the suggestion of my mechanics, I went with Wagner rotors and Reybestos pads instead of Ford parts. In each case the new parts appeared much more substantial than the factory parts they were replacing. I haven't noticed any change in performance, and that's a good thing, as short and predictable braking has always been a Focus strength. I'm hoping to, also, benefit from longer brake life.
I could have, by the way, had the job done cheaper at a Ford dealer, as I'm covered by an extended warranty, but, as I said, I have great faith in my long-time brake mechanics, and would rather spend a little more money for the added peace of mind.
Rob