Squeak coming from front end when driving?

1996 Ford Bronco Eddie Bauer Edition
322, xxx miles 5.0L V8

Within the last month or so I've noticed a squeaking sound that "appears" to be coming front the front end or front wheels.

At first I only seemed to notice it when it was cold and when I would first start driving. It seemed to go away after driving a mile or so down the road.

Probably 3-4 weeks ago I bought new tires (Boyfriend Goodrich All-Terrains 31x10.50) and upper and lower ball joints were replaced. Also, all zerks underneath have been greased as well.

I'd say in the last 2 weeks the squeak has started getting worse. Now I can hear it driving down the road. I have a Flowmaster muffler and can now even hear it over that. It's a sound that almost sounds like something is rubbing and you hear it when the truck is in motion. Of course, no sound when the truck is still.

Sometimes the truck won't even make the sound.

I've had the previous owner (my wife's dad) and my mechanic ride in it and of course those times it didn't make the sound.

Things that come to mind are bearings, seals, u-joints, maybe even brakes?

Just looking for some other ideas.

You can check your u joints. Sometimes when they get worn a lot they don't fit as tight and they will rub occasionally making a squeaking sound

No. Maybe it's a sign that you're a sqauker like The Modern God said from NASA.