I just replaced two sets of wheel bearings after 10,000 miles on my Keystone Alpine, 2012. I had about 6000 miles on it before my last trip and while preparing for that trip I checked all wheels. I ...
I've never had to repack bearings every year. Not even every 2 years. I tow our trailer about 2K to 3K miles a year at most. Been towing for several decades and have never had a bearing failure. Always have looked fine when serviced. Boat trailers are quite the opposite. Constant dunks in the lake take their toll. Is there a reason why some need to repack yearly? Full time towing 10K+ per year?