More NAC - Rotor mystery

Ed Kellock ekellock at
Tue Dec 4 07:33:23 PST 2007

I had a roughly similar wear pattern on some UFO rotors.  I believe it
was due to the development of some rust that got a good enough start
to abrade the pad more than vice-versa. I can take some pix if you
want to compare.


On Dec 4, 2007 8:22 AM, mike claire <mike.claire at> wrote:
> I appreciate your indulgence gents, because this is 180 degrees away from
> turbo/quattro.  The link below points to shots of of the front brakes on my
> '98 Grand Caravan.  I bought it fairly recently (took it in trade actually -
> he got my '84 300TD and I got $4K plus a well kept Caravan).
> I have never been able to get ABS to kick in, just not enough brake power.
> Now I know why.  There was only 1 inch of pad contact, and it wasn't close
> to the outside of the rotor.
> These brakes passed NH State Inspection 2 weeks ago.  Obviously they
> observed the pads from the side and determined there was plenty left on
> them.  The basket weave rims makes it tough to see the rotors.
> See how much pad material is left?  These brakes were NOT down to the
> rivets.
> What can possible cause this consistent groove in the center of each pad?
> I have replacement parts ready to go on, but I'm looking for input before I
> proceed.
> Many thanks
> Mike
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