2021 Pilot, bought new. 15,000 miles. Strange noise/bump felt under drivers feet when slowing down. First thought it was brake, but also occurs when slowing without braking. Started a few weeks ago as an intermittent fault but now occurs almost all the time, along with a low level grinding feeling. Would appreciate any thoughts. Someone suggested taking it to an independent tire shop but I don't feel like paying for this when the vehicle is so new. Before going back to Honda dealer I would like some clue as to what it might be. Being female I am often treated like I know nothing.

 

Have the dealer check it out. It's under warranty.