Well, i had my tires rotated and the noise at 30 mph has disappeared. the Front tires were wearing down in a pecu pattern meaning some of the lugs were taller than others. dont Know if something was vibrating due to the tires or not but I’m just glad that the noise is gone.
I have a similar issue and and they said the Rotor Dust Shield could have moved. I don't here it very often at 30mph or higher. When I back up the truck 10 feet it is gone. Taking the front drivers side wheel off tonight and checking it.