Humming noise

[f1502rngr]

I have a 98 F250 4x4. I believe this to be a bad hub (they are automatic locking), but when I drive straight down the road I have an unusual humming noise. but when I turn to the right it drastically quietens down. I had it aligned 6 months ago, and the wear on the tires are normal, no squealing\squalling from them, just that loud mud tire sound, which I do have mud tires redesigned for highway use as not to wear out quickly. Firestone Fierce LT315\75R16.

If it is a hub, turning to the right quits it would mean the right hub is bad? I have checked the balljoints and tie rods, all good and solid.

[f1502rngr]

Anyone? These hubs cost 250 dollars each, do not want to buy them if I do mot have to.

Thnx

[f1502rngr]

Anyone? Please!!! Could it be the carrier? The Hub(s)?

[TimR]

I have a 98 F250 4x4. I believe this to be a bad hub (they are automatic locking), but when I drive straight down the road I have an unusual humming noise. but when I turn to the right it drastically quietens down. I had it aligned 6 months ago, and the wear on the tires are normal, no squealing\squalling from them, just that loud mud tire sound, which I do have mud tires redesigned for highway use as not to wear out quickly. Firestone Fierce LT315\75R16.

If it is a hub, turning to the right quits it would mean the right hub is bad? I have checked the balljoints and tie rods, all good and solid.

at what speed does turning right quiet it?

[f1502rngr]

At about 35mph and up.