Your speed sensor automatically detects your wheel size. If necessary, you can manually enter your wheel circumference in the speed sensor settings. The tire size is marked on both sides of the tire. This is not a comprehensive list. You can also measure the circumference of your wheel or us...
the wheel rim diameter, millimeter. Generally speaking, if the same number, can be mounted to the tire rim; if the number is different, is not to tire. For example, a highway tire 700 x 20C ISO nominal 20622; a mixture of the ISO tire 70038 nominal 38622. The width of the ...