I have an 04 G35 with a humming noise coming from the front of my car. Does anyone know what could be causing it?

I have dunlop direzza tires. Reviews don't indicate these tires are loud. The noise is the same in gear and out. I have brembo brakes and changed the pads recently. It didn't change the noise. I had the front end aligned with no change.

 

My guess is either you have a wheel bearing on the way out or your tires are cupped/feathered. How many miles on the car and tires?

 

80K miles on the car. Not sure how many miles on the tires. The tread is good.

 

Does it vary with speed? Go into a parking lot and do a hard sweeping turn in one direction to see if it can make the sound louder or produce an obvious grind/groaning noise. Then try doing the same thing turning the opposite direction. If it does it when you turn right, it means your left side wheel bearing is probably on the way out... if it does it when you turn right, it means the left side is on the way out. You should also jack the front end up and try to rock each of the front wheels by putting your hands at the 12 O'clock and 6 O'clock positions and then also at the 3 and 9 O'clock positions to look for play.

 

Thanks guys. That is helpful. I tried the sweeping turns and checked the wheels for movement. The noise may have increased a little on right turns. It may be my imagination though. There was no play in the wheels when I jacked up the car and rocked them. The tires look good. I'll keep an eye on it.