Road Bike Wheel Size In Mm. Fortunately most wheels can accommodate a range of axle standards. If the rim is not marked with its bead diameter you can read this from the tyre it s the one dimension they have in common.
This wheel size is the largest available for conventional bicycles giving a racing bike more stability at high speeds. Standard road bicycle wheel size today is 622 mm and it usually takes tyres of 23 622 or wider 25 622. Subtract 6mm from overall width to estimate the rim section or simply measure the distance between the flanges.
On road bikes and hybrids no as these bikes will all have a similarly sized wheel.
To get the approximate diameter of the wheel with the tire on you would take the diameter of tire x 2 because it s both on the top and bottom the diameter at the rim pi 3 14 to get the cimcuference. If the rim is not marked with its bead diameter you can read this from the tyre it s the one dimension they have in common. These bikes are also generally specified with tires that are 25c or 25mm wide on their outside before inflation. Most thru axles are found on mountain bikes although increasingly disc braked cyclocross and road bikes are using them.