Another 36+ Cycling Tires 700 X 25C. This tire features a folding bead, measures 25 millimeters, and holds 700 cubic inches of air. Buy cycle tyres 700x25c and get the best deals at the lowest prices on ebay! (that didn't really exist, rims are measured in etrto which for this side it would be a 622x** where**=rim width, but that 700c tire size has a 622 millimeter bead seat diameter.