jotityra wrote:

Can trailer tires cause trailer sway? I have a 2015 jayco 26bh and I am sure the hitch is setup correctly, but I am getting more sway than I would like. When a semi or a truck pass by it really pulls the trailer. This is my first trip with the new truck, which is way better than my last one. But I still get a little bit more sway than I'd like. I'm thinking that the tires are original on the camper and the side walls are not stiff enough to hold up to being pushed around. That's my working theory anyway. The trailer is a 2015 jayco 26bh with original tires, towing with a 2020 f150 supercrew 4x4 5.0 3.55 rear end. I know the tires are due for replacement anyway but the tread looks great so I thought we would get through this year with them. We weren't sure if we would get any camping done this year at all but it looks like we have a few trips planned. This is the 2nd year we have owned the camper. Also the tires are power king st205/75r15 towmax str load range c. I am looking at the Goodyear endurance trailer tires as I like the specs and reviews on those. The hitch I'm using is a Eaz-Lift Recurve R3 with the sway control incorporated into the hith, my other thought is to add a sway control bar to the hitch but the reviews on this hitch are good and people seem to like it.

valhalla360 wrote:

Have you weighed the rig to see what the hitch weight is?

Most common issue causing sway is too little hitch weight.

If you are on "C" rated tires now, I would not move up to "G" rated. That's way too big of a jump. It would be like the trailer ridding on rocks.

There will always be some sway when a semi passes. If it's more than you are comfortable with, I would check into a sway bar.

PS: I'm not seeing the torsion bars on your picture. I assume you do use them when actually traveling?

cavie wrote:

Just add a sway bar to your hitch. Chain hung bars do not provide sway control.

Sjm9911 wrote:

I'll add my 2 cents. You need new tires anyway, so going to a d would be good. Thats a heavy TT, max weight like 7000 lbs. Whats your truck rated to pull? Next i would air up my truck tires, and the ones on the TT. Also make sure you have more weight in the front of the TT wheels. So shift what you carry forward. See where your water tank is, might have to travel with it empty. Vut evwn woth tose things, you will feel it move when passed etc. Just the nature of towing something that big. Also i agree with the checking on a good sway bar.