The truck is a 96 Ranger 4x4 with v6 4Litre. I have a 8x10 trailer with big wheels, not a home depot one, it's nice. We broke up my mothers stairs with a jack hammer and loaded the cement in the trailer, when I noticed my springs were about 6 inches from the ground. We unloaded quite a bit and the springs came back up but still low, and the trailer was about 2-3 deep with concrete. I got to the dump and had to go up a slight hill so I put my 4x4 on, I had my tranny in low and near the top I started hearing a scraping noise coming from the left front tire. It seemed to be associated with the wheel revolution. Now, a week later, that scraping is VERY loud and there is also a high pitched whining, like the sound a train makes when they break. When I press on the break, the whining seems to go away but the scraping is still there. Funny thing is when I back up there is no noise... so I don't know. Tranny? I'll say this, it sounds almost exactly like it did 3 months ago when I had metal on metal brakes at that same left front tire. But I had a $900 brake and rotor job all around so it shouldn't be that. any ideas?