I've had it aligned and tire wear is normal. Sounds like an airplane. Maybe wheel bearings worn out?
Tuesday, March 20th, 2012 AT 12:33 AM
Are the tires cupping? Run your hand over
Them. Do thay feel choppy. If yes you might need shocks or wheel balance
Tuesday, March 20th, 2012 AT 12:56 AM
An "airplane engine" is exactly how I describe noisy wheel bearings. If the noise changes when you steer to one side, such as when changing lanes at highway speed, it's definitely a wheel bearing. If the noise doesn't change, it still can be a wheel bearing.
The best way I've found to identify which bearing is noisy is to run the vehicle on a hoist and listen next to each one with a stethoscope.