On Thu, 11 Jan 2018 02:47:38 -0000 (UTC),
Mad Roger wrote:
> The scientific question is how do we correctly interpret why EE pads seem
> to outperform FF pads in this police cruiser study done in 2000?
> https://www.justnet.org/pdf/EvaluationBrakePads2000.pdf

I called Centric at 626-961-5775 where I'm told the Centric parts for this
vehicle a
* Rear shoes: 11105890 ceramic
* Front pads: 10504360 ceramic

I spoke to Centric tech support multiple times today, who knew all about
the Michigan police cruiser studies, SAE J866 Chase Test, and SAE J2784
compliance, and the AMECA Edge Codes (aka DOT Edge Codes).

They gave me the DOT Edge Codes after calling the warehouse:
* CENTRIC 11105890 shoes = 111AA9101FF30N17 which is CEN 111AA9101 FF
* CENTRIC 10504360 pads = 15AA2256FE48A17 which his CEN 15AA2256 FE

The rear shoes have a registered material of #161379 which matches:
* CEN 111AA9101 FF
* CEN 112AA9101 FF

There is a large discrepancy in the front shoes since they match to #161583
* CEN 15AA2256 GF (this is not EF which is what is printed on the pad)
* CEN 15AA8241 GF

After multiple calls to Ameca and to Centric (I've left out the engineer's
names from this and all my reports on purpose), there must be a mistake
which they'll iron out between themselves.

I asked CENTRIC what "OEM Quality" means, and the engineer told me "mostly
marketing". I asked if there was a spec of clay in the pad if they could
call it ceramic, and he agreed.

He told me a lot of other stuff also, such as the fact they don't sell to
Rock Auto nor to Amazon, so if you get Centric parts there, it's through a
reseller of some sort.

The technical engineer did tell me that Centric puts all brake shoes on a
dyno and tests them thoroughly to assure they meet OEM Quality, but it's
not like a manufacturer gives them a spec. They just know how brake shoes
and pads should work.

If you do not believe any of this, I don't blame you because it goes
against all your intuition but intuition is almost always wrong on highly
marketed items because it's not intuition that drives the thought process
anymore - it's marketing.

But all you have to do to confirm is make the same phone calls I did.
Just ask for tech support when the operator answers the phone.

AMECA +1-202-898-0145
CENTRIC +1-626-961-5775