Bad carrier bearings, also known as center bearings or center support bearings, can be felt and heard. If you feel a vibration under the vehicle when accelerating or hear the noise of a bad carrier bearing or u-joint like a spinning or grinding, we recommend inspecting the driveshaft and its carrier bearing and u-joints. If the center bearing is loose or worn, we recommend also looking at the rest of the driveshaft, like the u-joints, as there is usually another cause beyond the carrier bearings. This article and video reviews how to inspect both the carrier bearings and the u-joints on the driveshaft.