We are towing our cmax for the first time. We have a 2006 Itasca Meridian 36 footer and our 2013 C-Max. We had Camping World install our setup, a Roadmaster Sterling towbar and a BrakeBuddy Stealth system. Followed everyone's advice and made sure we had a charge line installed. We were at the bottom of a freeway exit and had to turn left onto a new highway. When we started the left turn I saw (in the rear camera) the car starting to shake and jump kind of like a fish trying to get off the hook. The shaking became so violent it was shaking the motorhome, too. We stopped, of course, and checked the hook up. Everything seemed fine. We continued on our way with no further problems. Anyone ever hear of anything like this? I suspect it may have been caused by a combination of the decline of the off ramp and the slight incline of the road we were turning onto, but that's only a guess.