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There are significant differences that exist between automotive wheel bearing applications and trailer applications. Besides the difference in wheel bearing size and design, there is also a significant difference in side load that trailer axles are exposed to in comparison to auto / truck. Some folks never experience wheels bearing failures because we follow a rigorous maintenance routine. I repack wheel bearings every year and I check bearing adjustment before any long trips. In my opinion, you can’t “over maintain “ wheels bearings. I would sooner invest time along with wheel bearing seals and grease to avoid changing wheel bearings as a result of failure during a trip.
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