How do I know my bike tire size?

Check your tire’s sidewall—the numbers there indicate your tire size (roughly its outer diameter and its width, but not always in that order). Typical road bike tire: 700 x 32c indicates a tire that has an outer diameter of 700mm and a width of 32mm.

Which is bigger 27 or 700c?

The rim diameter of a 700c wheel is actually slightly smaller than that of a ’27inch’. 700c bead diameter is 622mm whereas 27″ bead diameter is 630mm.

What is a standard bike tire size?

But recent research has proven wider tires to be faster and more comfortable in most situations. As a result, 700c x 25mm and 700c x 28mm are now the most common road tire sizes; many riders prefer even wider widths of 30mm or 32mm.

Are 700c and 26 the same?

What Is The Difference Between a 26 Inch and a 700c Wheel? This brings us around back to the same answer; they are the same diameter, but a 26-inch tire will fit onto a 700c rim but not the other way around because of the difference in rim thickness.