How Often to Repack Trailer Wheel Bearings?

mooky stinks wrote:
Big difference whether it's a new trailer or a repack. I don't trust new trailers to be packed properly. But after that, every 2 years doesn't seem unreasonable.

I always completely service trailer bearings before putting it in service. I have seen little grease, loose adjustments and a brake not connected on a new trailer.

Now that trailer bearings have the cheapest Chinese bearings available, all bets are off on when they might fail. I have had five of them in various degrees of failure in 8 months and 11,000 miles. No outward signs of the problems. Had I not checked them, there would have been a major event on the road.

Now I will never use the cheap bearings and replace them with Timken.