A noisy skateboard wheel can have several causes, including dirt, a dry or damaged bearing, loose or overly tight hardware, misalignment or wheel contact. Noise alone does not prove that the bearing has failed.
Check the simple causes
Lift the board and spin each wheel by hand. Check whether it rubs on the truck or another part, and confirm the axle nut is secure without preventing free rotation. Compare the noisy wheel with the others, then inspect the bearing for visible dirt, rust or damage.
Clean only when appropriate
If the bearing is dirty but otherwise sound, use a cleaner compatible with its materials and follow the cleaner’s instructions. Let it dry fully before applying compatible lubricant. Do not use extra lubricant simply to cover a grinding or sticking problem.
Replace a damaged bearing
If it remains rough, sticks, is significantly corroded or has visible damage, do not ride it. Replace it and check the wheel assembly before returning to the session.
See how to clean bearings and the DSCO maintenance guide.