I picked up my roadster about a month ago and one thing that is driving me up the wall is the squeaky wheels. The vehicle had about 19k miles on it when I bought it. I assume the dealership replaced the brake pads. I was hoping after driving it about 500 miles, the squeakiness would go away. However, it hasn't.

The squeakiness sound is constant with or without applying the brakes (but the sound can change when I do hit the brakes). As far as I can tell, there is no friction hampering acceleration as the gas mileage is consistent with my old coupe. Can I assume that this noise could still be the brakes? If so, I assume I could go to any auto parts store and get a "de-squeaking" solution. I really would like to avoid taking it back to the dealership for this. However, it if is something more serious (such as wheel bearings) it would obviously need to be taken in. It appears that the sound is coming from the rear wheels.

TIA for any advise.