I have a 2015 Ram 3500 6.7 CTD SRW (850tq with Aisin transmission).
I have been complaining about my brakes since I owned the truck. I have 2 trailers:
2015 Jayco 5th Wheel (43', ~14,000lbs)
2005 Cargo Express 28' Car Hauler (tandem axle)
As with may others reporting here, I get inadequate braking force at the trailers, with the gain on the controller set to 10 (regardless of heavy/light mode). Both trailers worked great with the previous (2006 Ram 3500).
I have had a number of "holy cr$p" moments at low speeds, where it seems the truck is the only thing slowing the trailer down.
With both trailers, I can easily roll down my driveway (300' @ 4% grade) with the manual lever on full - it will not stop the truck/trailer.
I feel that if I set my gain to 10 on Heavy Electric, it should be too much gain - I should have to roll it back to get the desired level.
I complained to my dealer. One of the techs there understands my complaint - he actually gave me an ITBM to A/B test today. I tried it, but there is no difference. They are going to try to get some info from "engineering" before my appt with them this Thursday.
I will report any findings I get from them.
To all who have contributed to this thread - Thanks! Hearing others' problem reports, tests, and seeing their data is very helpful.
Cheers!
Norm