grt109-
I doubt he means porcelain, unless of course you have a toilet hitched on to the back of your MO. I am sure he means
ceramic. The MO's brake pads, both front and rear, are of a ceramic composition. They yield better stopping power, are more fade resistant and produce less dust than "standard" brake pads.
You wrote: "
the dealer says there is nothing he can do about it....that this is a problem being experienced by other Nissan vehicles."
Let's see if I understand him correctly. Since other Nissan vehicles are having this same problem, it is OK for you to have it, and there is no need for him to investigate further in an attempt to fix it. Using his rational, there would never be a recall or TSB issued, because the more prevalent a problem was, the more acceptable it would be. :ucrazy:
Sometimes brake noise can be corrected by applying a special brake grease on the back of the brake pads (never on the face of the pads).
-njjoe