I've had my used (21,000 mi) '04 A/T sedan for about three weeks and just chaulked up the excessive noise to the fact that the G35 is s "sport" sedan (ie not luxury car).
The noise is always present but is especially loud at low speed. Frankly, it sounds like I have a hung-up caliper. I tried altering brake pedal pressure and sound doesn't change. Could it be the OEM BS Turanzas that everyone seems to hate?
I brought the car in for service (ABS/VDC off/slip lights stay on and Speedo doesn't work when first starting on cold morning) following suggestions from several members. The loaner, a G35X with 13,000 miles and Goodyear tires is MUCH quieter.
Any thoughts? Thanks in advance.
BTW, I can see why drivers love this car.

 

Excessive road noise, from my experience, is usually tire dependent. If it's too excessive for you, I'd definitely look to tire rack for some replacements.