DIYbanter - View Single Post - Need help INTERPRETING these test results police cruiser SAE J866a Chase Test

Mad Roger

On Thu, 11 Jan 2018 13:20:56 -0800 (PST),
wrote:

a) Why would one want to interpret these codes in the first place?

Here's just one example to help answer that on-topic question
bearing in mind that brake pads are highly marketed items.

If you are comparing three pads that fit your vehicle spec:
a. $50 Axxis performance
b. $30 PBR midline
c. $20 Metal Masters economy

And you look at the code printed on the pads, you'll find they are
*exactly* the same numbers (since they're all the same pads/shoes, just
marketed differently).

In addition, the code printed on the pads tell you the material is exactly
the same, even if they're not the same pads (so you can more easily compare
across brands).

And it will tell you the coefficient of friction, even if those two things
are different still, so you can compare across lines and brands for
friction.

Why would you deny a vehicle owner that useful comparative information?
http://www.ameca.org/wp-content/uploads/2017/12/AMECA-List-of-VESC-V-3-Brake-Friction-Material-Edge-Codes-December-8-2017.pdf