Girlfriend's 2007 Accord (I4) had a Centric PosiQuiet Ceramic pads (105-series) installed by her family's preferred tire/repair shop. These front pads were installed on resurfaced OE rotors about 30,000 miles ago.
I noticed that the front brakes would exhibit some very light squeaking during low-speed stops. After disassembly I found the culprit for the noise:
Untitled by The Critic, on Flickr
(Caliper piston had worn thru the teflon coating on these shims)
Untitled by The Critic, on Flickr
(Single-layer metal shims...at least from what I could tell; pads such as the Akebono Pro-ACT or Raybestos EHT have multi-layered metal shims)
In comparison, this is what the dealer pad kit looked like:
Untitled by The Critic, on Flickr
(As you can see, the OE pad uses a single shim for the outboard pad, and two small shims for the inner pad. On the inner pad, there is a small rubberized shim that gets attached to the pad, followed by a small stainless steel shim (thick one) that goes on top of that rubber shim. This way the piston does not wear thru the shim. Molykote is also applied to both sides of each shim, including the pad backing plate.)
In summary, the pictures above demonstrate the potential consequences of not using the factory shims (or shim design) on your braking system.
And yes, installing a new set of Genuine Honda pads (along with Centric High-Carbon rotors, new pad abutment clips and confirming the lateral runout reading) corrected the noise issue.
I noticed that the front brakes would exhibit some very light squeaking during low-speed stops. After disassembly I found the culprit for the noise:
Untitled by The Critic, on Flickr(Caliper piston had worn thru the teflon coating on these shims)
Untitled by The Critic, on Flickr(Single-layer metal shims...at least from what I could tell; pads such as the Akebono Pro-ACT or Raybestos EHT have multi-layered metal shims)
In comparison, this is what the dealer pad kit looked like:
Untitled by The Critic, on Flickr(As you can see, the OE pad uses a single shim for the outboard pad, and two small shims for the inner pad. On the inner pad, there is a small rubberized shim that gets attached to the pad, followed by a small stainless steel shim (thick one) that goes on top of that rubber shim. This way the piston does not wear thru the shim. Molykote is also applied to both sides of each shim, including the pad backing plate.)
In summary, the pictures above demonstrate the potential consequences of not using the factory shims (or shim design) on your braking system.
And yes, installing a new set of Genuine Honda pads (along with Centric High-Carbon rotors, new pad abutment clips and confirming the lateral runout reading) corrected the noise issue.
