我这位骑车的朋友被他理发师会计的女友的表弟委托转达,在城市道路上使用 35>32mm 的轮胎,速度没有损失,而且舒适性更好。
他想知道,如果他骑的是耐力型自行车,并且骑行路况是砾石路,是否应该尝试 38mm 的轮胎?
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