Hi,
NZ_M3- Are your Calipers Shimmed corectlty
and centered to your discs ?
Ie] with the front wheel off when you rotate
the disc through 360 degrees does the disc
always stay even equall distance from the disc
face, ?
Also check to see if the calipers are sitting
''square' to the face of the disc, so that
the gap between the face of the Pad and disc
is more or even.
If the calipers are not aligned true to the
face of the Disc, which can be a machine or
tooling issue at manufacture, then you will
not only destroy discs very quickly but you
will suffer Brake Judder.
Softer Pads, such as DS2500 will wear and
tear which will compensate a little for
components which are out of true,
where as Harder Pads will throw up issues
very quickly.
I know AP supply thin 'shim' washers for their
Calipers which are used to 'true' caliper to
edge of disc, but I have seen some on rare
occassions where thin spacers have been
required to centre the caliper over the discs
faces.
Looking at the pictures of your Discs, although
hard to tell from a pic there does not seem to
be much Pad residule on the face, so I would
guess that Pads are not overheating.
Are your Pads able to move Ok within the
Caliper body, as sticking pads will cause
judder and can lead to disc warp.
As a note- when I had AP's on my E39 M5 I had
terrible Brake Judder after about 2000 miles.
AP replaced the discs, and then the same again
more or less.
Was running DS2500 Pads. No point Tracking
2 ton of E39 M5 with recirculating Ball steering.
Then on the third set the discs were not only
bedded in but they were taken right through a
full over heat cycle so that the discs were well,well
'blue' where they meet the alloy disc belles.
Never had any issues after that.
Regards,
The Gorilla.
NZ_M3- Are your Calipers Shimmed corectlty
and centered to your discs ?
Ie] with the front wheel off when you rotate
the disc through 360 degrees does the disc
always stay even equall distance from the disc
face, ?
Also check to see if the calipers are sitting
''square' to the face of the disc, so that
the gap between the face of the Pad and disc
is more or even.
If the calipers are not aligned true to the
face of the Disc, which can be a machine or
tooling issue at manufacture, then you will
not only destroy discs very quickly but you
will suffer Brake Judder.
Softer Pads, such as DS2500 will wear and
tear which will compensate a little for
components which are out of true,
where as Harder Pads will throw up issues
very quickly.
I know AP supply thin 'shim' washers for their
Calipers which are used to 'true' caliper to
edge of disc, but I have seen some on rare
occassions where thin spacers have been
required to centre the caliper over the discs
faces.
Looking at the pictures of your Discs, although
hard to tell from a pic there does not seem to
be much Pad residule on the face, so I would
guess that Pads are not overheating.
Are your Pads able to move Ok within the
Caliper body, as sticking pads will cause
judder and can lead to disc warp.
As a note- when I had AP's on my E39 M5 I had
terrible Brake Judder after about 2000 miles.
AP replaced the discs, and then the same again
more or less.
Was running DS2500 Pads. No point Tracking
2 ton of E39 M5 with recirculating Ball steering.
Then on the third set the discs were not only
bedded in but they were taken right through a
full over heat cycle so that the discs were well,well
'blue' where they meet the alloy disc belles.
Never had any issues after that.
Regards,
The Gorilla.
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