Vibration no one can find

Several things.

First, I changed the carrier bearring hanger.... Bent my air ride rod...switched trailers with another driver & put on a new steer tire.

I wished I'd have done it one at a time. But did em all at once...

Most of the vibration went away. I still get a vibration at very low speeds.

Funny thing is... My friends trailer started vibrating when he hooked onto the trailer I was pulling.. He changed a few tires on it, and it went away.

But, keep in mind. My truck vibrated with every trailer.

I'm pretty sure it was the carrier bearing hanger and the one steer tire. My driver line is almost dead on straight. I'm thinking I need to get a few bushings for my spring hangers. One is looking like it's trying to come out.