Just completed a disc brake conversion, Electric over Hydraulic and new tires on our 2013 Rubicon 2900. 2900 Came with Lippert 7K axles with I believe they were 13" Electric brakes. 1st day reading the Dutchmen manual it talked about setting the brake controller by adjusting until the brakes locked up then backing it off until it didn't. Even though our trailer was pretty much empty there was no way the electric brakes were powerful enough to lock the brakes, even by manually operating the brake controller at full output. Go figure...
Our tow vehicle is a 2014 F-350 11K tow package with Ford's built in brake controller.
Purchased Kodiak Disc Brake Kit and Carlisle HydraStar Electric-Hydraulic Actuator HBA16 from etrailer. Installation went in with out any problems. Mounted the Hydralic actuator in the garage area against the wall to keep brake lines short. The only problem I had with the installation was the 7 pin cable our trailer came with that connects to the tow vehicle had a couple of wires with the color code connected to the wrong pins. Took awhile to find that problem
During this upgrade I removed the Akuret HF188 ST235/80R16 LR E (3420lbs/80psi) which were showing wear at the outside edges of the tires after only 7600 miles. Wear looked like they had been run under inflated. I might add that we went through the Smart Weight program with escapees and from day one the tire pressures were maintained according to the Load Inflation table +10%. No high speed driving, tires were maintained and taken care of.
We replaced the Akuret's with Carlisle Radial Trail RH ST235/85R16 LR F (3640lbs/80psi) or can be run up to 3960 at 95psi. Rims that came with the trailer are rated for up to 110psi.
The 85R16 Carlisle's are almost 2 inches taller (1.9 inches) then the 80R16 Akuret's but the 85ís slid under the fenders without any mods. The folks at etrailer were very helpful with this project. I could have done this myself but I had the brake line work done by a professional, took two days for the project considering we had to open the bottom of the trailer up to install brake lines and wiring for the Hydraulic Actuator. Oh, the trailer stops on a dime now..