Sigma BC 509 - Wheel Size Chart and Methods; Measuring Wheel Size Techniques

5.2 Wheel size chart (Radgröße / Wheel size / Circonference de Roue)
mm x 3,14
km/h:
WS = mm x 3,14
mph:
WS = mm x 3,14
1x
= WS (mm)
km/h:
WS = mm
mph:
WS = mm
A
B
14