My 05 Frontier has recently started making a noise that I only notice if I am going 60+ mph. I think it is coming from the front of the vehicle and seams to get louder when I am making soft turns on the interstate. At first I thought it was just road noise but I realized that I hear it on asphalt and concert without any change. The best way I can describe the sound is it is a rummmm…rummmm…rummmm. I have yet to notice it increasing with speed but it does get louder when I am turning. What could this be and should I fear for my safety while driving?