So recently I have been noticing this weird grinding sound in the front of my car. I had assumed that it was just random noise and it was nothing, but now im beginning to think it may be something to do with my front differential or my spindles. It doesn't happen all the time, only when I am going under 10 mph and I am in 2wd. I also have auto hubs so the spindles are always spinning. Anything to be concerned about?

 

It might just be your brake pads ...there's a ware indicator that grinds on the rotors when the pads needs to be change.