This paper examines learners' fluency development in L2 silent reading rate and comprehension. In both L1 and L2 readings, a positive relationship between readers' silent reading rate and comprehension has not been as firmly established as theories might propose. Based on Wallot et al. (2014), the paper indicates the need to look at readers' silent reading rates as a process rather than a result of the reading act. Variability L2 readers face while reading reflects their successful and unsuccessful attempts to comprehend the text they are reading. Through a new examination of unpublished data from Taguchi et al. (2012), the paper proposes to look at readers' silent reading fluency development across a longer period. In addition, it indicates the need to consider different purposes readers set for their reading to understand how their rates vary. This proposal has practical implications for not only researchers but also classroom practitioners.