I have a 2007 Chevy Cobalt front end roar
I had all 4 tires changed last September and then this June I started having
a roaring noise in the front end of it. It sounds like an airplane getting ready
to take off but never leaves. I've had the tires rotated and that didn't help.
The noise starts at about 20 mile per hour and never gets any worse but
never any better until I stop. It's very loud. When I turn corners the noise
never changes either. I can feel the transmission changing gears so I know
that it's not slipping. Anyone have any ideas why the noise?