Hi,
My opinion is that road imperfections and the effect in the vehicle/trailer certainly impact the ride quality. However, my opinion is that when an OP inquired about “chucking” it is because the the ride qualirlty is unacceptable even on extreamely smooth roads. Things like inadequate pin weight, hitch pin slop, and other truck/trailer suspension issues must be present. I have not been able to resolve or even reduce the “chucking” I experience despite ‘Mor/Ryde RPB, Andersen Hitch, truck air bags, complete trailer axle alignment including caster, camber, adding new shocks to truck/trailer, even tried a BD-3 air hitch, etc. I have about a 23-25% pin weight when vacationing. I have tried increasing pin weight (sand bags in front storage area, decreasing pin weight (sand bags in rear kitchen area) to no avail. It could be that I am concluding that the uncomfortable back/forth motion on us passengers in the front seats is actually the trailer pushing rapidly up/down on the rear of the truck caused by some resonance condition. It can actually be worse on smooth roads than rougher roads which has lead me to this conclusion. The remaining thing to try is to have someone else with a similar vehicle try towing my trailer and to also tow a different trailer about the same GVwR to try to see if there a a difference.