A LOUD hum from the right front while driving a 2001 Windstar. I assume it to b the wheel bearing. Is their another possible reason for this noise?

Sounds exactly like a wheel bearing issue. Possibly one of the wheel bearings is defective. Have them rechecked

How are the tires? New? Old? Rotate them and see if noise goes away. Possibly front wheel bearing in the front drive axle where it goes thru the hub and rotor.......goes the noise get worse if you turn right or left slightly when driving it? If it gets worse on one side that is the side with the bad bearing.....replace as needed.

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check wheel bearing

If the noise get louder as you speed up, it is possibly a wheel bearing, needs checking out by a mechanic.

Have the wheel bearings / wheel balance checked.

hello
most of the time when there is a humming noise other then a brake noise you have a wheel bearing bad the best way to tell if it is a wheel bearing making noise is while you are driving down the road and the vehicle is making the noise slightly turn the steering wheel left to right if the noise changes at all replace the wheel bearings gm cars are notorious for wheel bearing
good luck chris

when turning left vehicle distributes weight to right front wheel bearing causing load. since u describe a noise in right front while driving straight i would suspect failed right front wheel bearing. see if your noise changes/goes away while turning right that should tell u 4 sure

humming noise usually comes from wheel bearings. did you change that with a new bearing? also choppy or worn tires can cause humming noise that sounds like bad wheel bearings. rotate your tires and see if the noise changes. if so its tires. also even if it sounds like its from the right it could very well be a bad bearing in another location.

That's a hub bearing. Replace the one that's doing it. I'm assuming this 'roar' is coming from the front, NOT the rear.

That's indicative of a wheel bearing, which is why you were told to change that out. However, it's also possible that the carrier bearings in the differential (where the drive axles attach) have gone bad. That happened to me on my 300ZX several years ago, and I had to replace the diff bearings. I would have them checked out somewhere other than a dealer (you'll probably get a better price from an independent shop).

As a sidenote, to be sure it wasn't a wheel bearing, if you hear it quiet down in a turn one way but get louder in a turn the opposite way, it's likely the wheel bearing. If you turn left at speed and it gets louder, then it's the right bearing (since you're loading up that side of the car). If it gets quieter in a right turn, it's the right side (you're unloading that side of the car and not putting as much weight on it, so it doesn't drag as badly). See if you get that symptom just to be sure that the wrong side front wheel bearing wasn't changed.