Not sure about that, no matter what speed I'm on , the display always shows 5 (unless i press the + or - myself. If driving on flat road at highway speed, and i hit the -, the display would stay on 5 but if just sitting in driveway, disply on 5 and i hit the - ten it shows 1.
2013 Jayco Eagle HT 23.5
2010 Ram 1500 HEMI with integrated brake controller, tow mirrors and Michelins LTX/AT2 275/65R20 max load: 3750 lbs. @ 80 psi but we keep them 50-55 psi