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I am aware that the rear wheel bearings have play in them when they are new because they are double roll ball bearings, not tapered timkens. I dont pretend to remember what these were like when they were new, but mine seem to have a lot of movement in them. So, the question is, how to measure- pull the brake caliper off, put the wheel back on and measure at the rim? How loose is to loose? Kind of would like to do a measurement, not a judgment call.