Jeff,
No sandpaper, nor steel wool. You might try removing any scaling with a
medium stiffness wire brush, though. The idea is, you don't want any
abrasives between pads and rotor. They'll eat the rotor when you apply
the brakes! Sandpaper sand, steel wool dust, and rust scale are all
abrasive.
That said, it's hard to tell from the photo just how rusted they are.
Best thing to do would be to take them off and have them resurfaced
("turned"). There are legal limits on the minimum thickness after
turning. I don't have the figure, but any decent brake shop should be
able to look it up. Based on that they can tell you whether or not they
can do yours. Shouldn't cost much, definitely a lot less than a new pair
of rotors.
Bill Kelly
|