Alright so I'm gonna come right out and say I have no idea what this new noise could be as I've never heard a sound like this before. I'm getting a metallic like rattle coming from under the truck when accelerating over 45 and on a rough road (newer asphalt or pavement with locks of cracks). Passenger says it's coming from the front passenger tire. I can feel it in the driver floorboard and just a bit in the steering wheel but no sway or real vibration. If I had to describe the sound it's almost like a soda can put into a house fan at times and at other times it sounds like a hose clamp spinning on something metal. I'm currently 275 miles from home on a fishing trip so my options are limited as what I can check.