On some models faulty front wheel bearings can cause a growling type noise from the front of the vehicle. Replacing both front wheel bearings is recommended for this repair.Google+
Car Problem Reports
Honda Odyssey Noise From Front Wheel Bearings, Replace Both
Honda Odyssey Problem
Model Year Affected: 2005
Average Mileage: 74,000 mi (60,000 mi - 85,000 mi)
Heard loud noises while driving, but thought it was just the engine noise. Took the car to Honda dealer and was told that I need to replace both wheel bearings.
I think the 2005 Honda Odyssey is one of the most problem-prone vehicles that Honda has ever produced.
Visitor, 2005 Honda Odyssey, 77,000 mi
Humming noise coming from the driver's side front wheel even with engine in neutral. The noise changes with the car’s speed. While still in neutral the pitch of the humming reduces as the car's speed is reduced. The transmission of engine speed has no effect on the noise.