I have noticed a noise over the last few weeks that seemed to be in the area of the front right tire. I thought it was my tires needing to be rotated. The other day I was driving maybe 60 miles per hour and suddenly it sounded like the tire went flat so I pulled over and check the tire and there was no problem with it at all. I turn around to go back home which was about 5 minutes away and as I accelerate above 20 miles per hour the noise starts and is much louder and seems to have moved more towards the middle of the car. It seems like it is underneath or at the bottom of the motor or front part of the car. It only happens when I accelerate over 20 miles per hour. Does anyone know what this could be?