My Chief is happiest around 50 mph +\- and I ride two lane paved or dirt roads so it's a good combination. I also get passed, with a 50mph speed limit I'll ride close to that. The other day I was doing 50 in a 50 zone and a tourist pulling one of those small, teardrop trailers passed me....whoa! The disturbed air from his mid sized car pulling that small teardrop trailer put my Chief into quite a wobble! It was startling, not particularly dangerous I suppose as I had both hands on the bars and the road was straight and smooth, but it took a few hundred yards for things to settle down. Been passed by trailers before, trucks, cars and motorcycles but I've never experienced that before...I'm thinking it was the aerodynamics of the teardrop trailer that caused the turbulence.