JUST A GUESS---WORN SHOES OR PADS, MAYBE METAL ON METAL---IS THE WORST CASE!

BEST CASE IS THE WEAR INDICATOR IS DOING IT'S JOB, LETTING YOU KNOW THE PADS ARE GETTING THIN

EITHER WAY, YOU NEED TO PULL THE WHEELS AND INSPECT THE THICKNESSES OF THE PARTS AND SEE IF ANYTHING ELSE NEEDS ATTENTION

THE MEDIC