回帖：这是一篇完整的关于自行车胎阻的研究文章。有兴趣的可以看看。
和胎径相关的结论部分我用红色标出来。我再仁至义尽的把这句话翻译成中文：
对于所有与地面的接触面相同（注：也就是说胎宽相同，胎压相同，胎的结构相同的理想情况，再加上负载相同，速度相同等前提条件）的轮子，滚动阻力和胎径成反比。
ROLLING RESISTANCE OF BICYCLE TIRES
Introduction
We are all familiar with the concept of rolling resistance and some of us even know enough to assess which tires will roll better than others. Others just take these things at face value but I wanted to investigate this subject in more detail and und