Hello my name is Alex and this is my very first post. I have a 2008 Frontier LE 4WD. I am hearing a humming sound and also a sound like if you had a nail in the tire making a sound as the tire rotates. I have purchased and balanced new tires as well as an alignment. I also installed new struts, but the noise is still there. I am thinking wheel bearings in the front or rear end. Anyone have this issue? If so, any advice is highly appreciated. Thanks.