So today I was headed down the freeway and when I accelerated between 55-60 it was making a noise, I could hear it because my window was down. I didn't think anything of it as first as I thought maybe it was a rock stuck in my wheel or something. Then I realized every time I tried to accelerate in that range it did it then stopped. It is driving ok besides that. I then was going up a hill and accelerated to 40 and it did it again. Help please, my husband is out of town and I need to figure this out!!!