hey all. a few months ago i started to hear a sound from the front of the car that sounded like loud road noise. a friend of mine w/ an 05 altima said she had a noise and had to have her bearings replaced. i took my car to nissan and no bearing problem. i have now bought new tires because i thought it was road noise and it was time for new tires. i had 50k on them. evidentally that was not the problem. i still have the noise. it kinda feels rough in the gas peddle when im drivng too. any ideas?