Only thing I really noticed going to a heavier trailer had to due more with the larger trailers increased surface area. I didn't have a sway issue, I have a Recurve R3 hitch. The increased surface area is more prone to a cross wind than my smaller trailer was. The push/pull from passing trucks is the same when it happens. I tow with a 1500, my friend has a 2500 and says he does not experience any push/pull. His trailer is bigger and heavier than mine. I guess the added truck weight and heavier suspension helps with the push. He said he does feel the occasional cross wind.