I have an 08 Titan center 4x4 long bed. I have a loud noise coming from my front end somewhere. It sounds like bogger tires driving down the road. If I keep the wheel straight. No noise. As soon as I turn the wheel the loud bogger noise and the more I turn it sounds like whhup whhup kind of like a helicopter. The noise gets louder the faster I go. I have fairly new tires. Still 80% tread. They are bigger than stock. 275/70r18. But it just recently started doing this. I can't think of what it could be, I've check the wheels for play(bearing) but no dice. Any ideas? It sounds like it's coming from both front tires.