I have a 2012 Wrangler, towed it about 4000 miles last winter to Colorado, through some steep mountain passes, etc. I have an F53 30ft motorhome. I started out with the supplemental braking and after about 500 miles decided it was more of a hassle than it was worth. Have not used the supplemental braking system since. As long as you are in the tow/haul mode and your rig is relatively lite like mine, your overall braking will take a little longer, but Diesel pushers easily take longer to stop without the tow vehicle than a relatively lite gasser with the additional 3800lbs.