Trailer push, pull

I have a hitch and don't really have a problem. After hearing guys I work with talk about their problems with the push it got me to thinking. Some of the guys have 3/4 ton trucks and say they don't get the push, some get a little. Some with 1/2 tons do and some do not. I was just looking at the why's it may or may not happen.

I had the same problem as you Dutchman when I had the chain setup, I don't miss it.

Some good answers and questions from the posters above.
I'll also ask...what tires are on your tow vehicle? P (passenger) or LT (light truck) tires?

There are lots of factors involved in trailer stability...
Tow vehicle
Trailer length
Hitching equip
Trailer loading and balance
Tongue weight
Tires
Road and weather conditions
etc...

I can only share from my own experiences. I drive a 3500 diesel duly crew cab, long bed. I tow a 35 1/2 foot Outback TT. I use an Equal-i-zer 4 point WD hitch system. And with this combination, I don't have any push-pull, suck in-out at all.

When I owned my 18 foot Dutchmen Sport Lite TT and towed with a 1500 Chevy Suburban with a traditional Reese WD (chain style links) and a separate Reese friction sway bar. I was blown all over the road!

Adding a 2nd sway bar solved the issue for me.

Do you have a weight distributing hitch and sway control? Towing with an Equal-i-zer hitch eliminated that push from trucks going by. Even DW was very comfortable with it at freeway speeds.