Most newer brake systems have "groan" issues. Long story short, you used to ahve smaller, hotter brakes with semi-metalic linings - i.e. steel wool that did a nice job of keeping your rotors clean. They did not stop as well, lasted maybe 30k miles, squealed when hot, but they did not "groan".
Now you have "NAO" - Non-Asbestos Organic linings that last much longer, your brakes are bigger and cooler and better but the new linings leave lining material on your rotors.
I put Performance Friction linings on all my vehicles when I change the linings. They squeal when hot but they keep the rotors clean and stop great.
Maybe we're referring to different sounds. My brakes squeak when I'm going sloooow, a low sounding squeak. Just because you think it's bull, doesn't mean your right. Jeep has been using the same axles, brakes, and rotors for a while now, can't see how they can't see how it's an issue. To me it's works like it is intended, an audible for wheel spin during slow crawling.
Chewbaca, yup, thats the sound. Lol! And for clarification, new jeep brakes are electronically controlled now... Ever have to jam them? It doesn't make that sound. Mine only do it when I'm crawling. Engineering a braking system to make that sound, on one of the most capable off-road vehicles in the world, is not that far fetched!
I hear it if I focus on it .. but it doesn't bother me because background noise becomes non-audible over time - its the way my brain is wired. I grew up near railroad tracks and after awhile you become acclimated to the noise.
I have tinnitus due to exposure to loud noises when I was younger... I ran open expansion chambers in the desert, watched top fuel dragsters, spent many years in clubs with loud music and operated large printing presses up through my mid twenties.
I don't even hear my ears ring unless I focus on it.
__________________ 2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold