>tire rolling resistance test are done on a bumpy surface
Which ones are? The ones at bicyclerollingresistance.com aren't road-like-bumpy at least, and that's the most commonly cited page I know of for rolling resistance.
Which ones are? The ones at bicyclerollingresistance.com aren't road-like-bumpy at least, and that's the most commonly cited page I know of for rolling resistance.
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