Originally Posted by
flanso
Take a look at the Nashbar site,
http://www.nashbar.com/bikes/TopCate...27_-1_200276_N
Expand "by size" on the left side of the page. You will see, for example, separate listings for 700x23 and 700x23c. The same for many other widths; some with c and some without. My question is, whats the difference between the sizes with and without the c?
No difference. Strictly a data entry / database records anomaly.