Push and Suck

I don't think it can be helped,my camper is 28' and no sway but still get the same affect from some trucks,its due to the large area and the longer the worse it is.some of the newer tractor/trailers never move my rig but older will shift it at times,I can guess which 1 gets better mileage ,I run 2 sway bars and don't think 1 of the high dollar hitches can stop it or you couldn't steer the truck but having never used 1 i'm not sure on that

Note: Moderator edit because of stupid mistake I made! :o

Try adjusting the tongue weight. Usually more is better (don't overload it). Move some things on the trailer forward. Sometimes just a little will do it.

Try putting tire pressures at max, both truck and trailer.

What kind of hitch does he have?

I found a barely used Equalizer 4 point 10k on ebay that stopped it for me. I had no sway before and very little push pull so it was an easy fix. Perception might be part of it. For some, it might feel like he's all over the road while the next guy feels a little trailer wag.

mike243 wrote:
Snip...I run 2 sway bars and don't think 1 of the high dollar hitches can stop it or you couldn't steer the truck but having never used 1 i'm not sure on that

Note: Moderator edit because of stupid mistake I made! :o

Yep, One of those "high dollar hitches" (think Hensley) will stop it and the truck steers great! :)

Sorry about the mistake on your post above. I hit "edit" instead of "quote" when trying to make this post.
Barney

Is he using a WD hitch? And/or using sway control? You will almost always get the push/pull from semis. I get very little with my setup. If I have the trailer loaded properly it does not get any push/pull. If not I get some.

If his numbers are correct then he is too light on the tongue. With an 8900lb TT he should have 1200lbs on the tongue. Your Car hauler is different, they have no sail area so you can go lighter on the tongue, usually 10% is plenty for those types of trailers and boats.

Dodge guy, I'm thinking he has an enclosed car hauler not an open one like used by the commercial guys. It would not be any different than a travel trailer.
Barney

Sounds like too much tongue weight making front nd light.

Been my experience that the 'push and suck' comes about more when it's windy and more when a big truck with a van trailer passes you because of the turbulence created by the higher profile trailer....

I also get that on a 2 lane when a truck passes the opposite way with a tail wind going my way. It's like a huge wall of air hitting me.

stiffer tires and shocks on the truck . 4×4 rides soft

When I had a bumper pull TT, I switched to a Hensley and it removed 95%+ of the push/pull plus it provided the piece of mind of knowing I would never experience another dangerous and scary sway incident. Expensive, yes, but they do sell reconditioned ones if you need to reduce the cost.