Im getting a what sounds like a tire rubbing against the front plastic liner on the passenger side but cant find any contact.Could it be the front diff making that same sort of noise?
It only seems to happens on sharp left turns while going slow and when going straight and coming to a quick stop.
I had a simular noise, it started like a rubbing sound,(thought it maybe was tire rubbage,but no), the rub sound ESCALADED to a constant rattle/rub then just a GAWD AWFUL horrifying thumping rumbling rattle! If THIS is what yours is doing, climb underneath the front end and check your FAN SHROUD. The Frontier with the 4.0 uses these cheesey fan shrouds that have a palstic piece on the bottom that comes unsnapped. (it's hard to see) and makes hell-acious nasty scary noises. Hope that's all it is for ya, I think a new one was less than 100 bucks shipped and I duct taped the old one until new one got there. (60 something if I'm remembering correctly, plus shipping). Good Luck