The inner surface of the OSF brake disc on my Citroen AX (which you're probably utterly sick of hearing about) is showing rather less wear than the inner surface on the nearside disc. This was picked up on when I had the exhaust downpipe changed over the weekend and may well explain why it pulls to the left a bit on braking.
When I say less wear, what I mean is that the unworn (rusty) band near the middle of the disc is about half as wide again as on any of the other discs (maybe 3.5cm as opposed to 2cm on the other surfaces). There is also a slight lip at the outside edge.
Is it fair to assume this unevenness is the root cause of the pull to the left on braking?
What might reasonably be causing this?
Is a change of pads likely to cure it, and if so am I going to need to change discs as well?
Cheers, Nick snipped-for-privacy@HAHAFOOLEDYOUSPAMMERie.org