For utility/landscape trailers, how often do you guys repack your wheel bearings? No submersions in water, about 3000 - 4000 miles a year (all seasons) or so in use. Yearly? Every 3 years? I'm going on 4 years now and think maybe it is time....or possibly past due considerably. What do you trailer axle experts have to say? Wanna kill these ads? We can help!