Psi

Tire pressure sounds too low to me as well. Chalk or tape your tires and see how much they really need.

I'll air the tires up to maximum sidewall pressure and put a strip of wide masking tape across a front a rear tire. Drive normally for a few miles and look at the tape. Drop 5 psi, re-tape and repeat. Continue until the wear is just barely biased toward the middle. That becomes 'my' proper air pressure for that load condition.

Oh, and if you look at the sidewall you will probably see you don't have 10-ply tires. They are just 10-ply rated (80 psi). They are for sure stronger sidewalls than C or D-rated tires, but typically have the same number of actual plys. You may have known that, but some don't.

Will do. Thx

I think you are on the low end with your E rated tire @46psi for towing, I would try going to 55psi and see if that would helped.

You need to find out what the max psi rating is for the rims. The tires should be 80 psi if they are ten ply and have the correct metal valve stems. Not sure where you can find the rim info out.

Don

Well, you could air up to the 80psi max of 10 plies, but it's possible your wheels may not not go that high. I've seen alloys that only go up to 60psi, and that's pretty much the max I use.

But it could be just the usual sway from the trailer nudging your truck in windy conditions. I too have a single friction bar. But could probably use more. Thinking about an Equal-I-Zer ...

EDIT: I would go up to 60psi and see if that helps

Could be, what's max psi rating on the side of the tires? I would air up to that. You'll still more than likely feel some sway on a windy day.