I am a cyclist. I've ridden since before my paper route at age twelve; I rode to high school; and for 12 years I rode to work. I no longer ride to work, but I try to ride about an hour a day. In all those years I never really paid much attention to my wheels. Sure, I repaired flats, greased the bearings, and learned that the axle hung from the top of the wheel rather being supported from the bottom. But all-in-all, I mostly took my wheels for granted. They worked fine, did their job, and I never considered there was much else to worry about.
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