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Pretty drastic! The hub will wear away very quickly. Good bearings 'bear' the weight carried by the hub. If the bearings break up, or become worn, or if there is insufficient lubrication, the whole thing could just seize up! There may be warning signs long before this happens, such as an ongoing 'noise' from the bearing.

Have it seen to! Some people can repair/replace such things themselves. Alternatively, to have it done by a professional is not always necessarily a very expensive job.

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Q: What is the consequence of not replacing bad hub bearings?
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