I have a 2012 VW beetle and it’s been making a rhythmic metallic sound at the driver side floorboard. I wouldn’t say it sounds like grinding but it’s very similar to the sound of a warped rotor rubbing against a brake pad. It only happens when I drive over 20mph and picks up in tempo the faster I go. The car is a manual transmission so when I disengage the clutch and let it roll at 40mph, the sound doesn’t change but once it goes below 20mph, it slows down and it goes away. When I put on the brakes, the sound is still there and it only goes away when the wheels are rolling under 20mph. It doesn’t sound like a hum, the car still drives straight and nothing vibrates and it doesn’t change when turning in either direction. I can’t hear it from outside but I can faintly hear it on the inside. I am at a loss as to what it could be
Edit: I included a link to a YouTube video of a the sound