You may not pay much attention to your boat trailer’s wheel bearings, but you should! Your boat trailer wheel bearing require a great deal more maintenance than any other over the road bearing. Boat trailer bearings are subject to possible water intrusion each and every time they are in contact with the water. Water is the main cause of bearing failure. Therefore, it is imperative to protect these bearings. One should remove your wheels and inspect your bearings and seals on an annual basis. During the season you can apply marine grade grease thru the hub lubrication systems as well. By doing this extra step your chances of a bearing failure will be greatly diminished.