Tire rotation.
 

I did my first tire rotation, jack, jackstands, muscle and brain.

Now I ask myself, why did I ever pay to have it done before?

Took it for a drive to the Gas Station, double checked the tightness of the bolts, etc.

Question is now, it was pulling slightly left prior to rotation, now it pulls right. (Only scary when you check out a hot chick and try to glide straight.)

Is it tread, or a balance issue?

Hmm that's odd. I really have no idea why your truck would do that. I don't think it would be a balance problem since it changes sides depending on tire placement.

not a balance issue, just uneven wear between tires (one or more is smaller/ bigger than the others)

Wirelessly posted (Timberwolf)

^you got it.

Check air pressure, make sure it is the same side to side.

how old is the truck? just wondering. mine does this wheel I mess with anything in the front end including tire rotations. it likes to pick a side to lean toward for a day

There are lots if variables. Air pressure. Alignment (specific to the way the tires were when the alignment was done). Difference in rolling resistance between tires. Amount of weight used to balance the tires (different for each tire). And finally , as the tires wear they become "less" balanced as when they had more tread. I wouldn't worry about it. If you are though I bet an alignment would help.

Thanks guys.

I just drove it 600+ miles, and it came and went.

At times I was flat, straight, and fine. Others I was holding on to the steering wheel so I didn't abruptly change lanes.

I'll prob leave it be till I get a new vehicle.