Wheel bolt-circle diameter is the diameter of a circle drawn through the centers of the wheel's mounting-bolt holes. Whether shopping for new wheels or scrounging wrecking yards for good used ones, ...

The most primitive part on any given vehicle is the wheel. It's the one invention that changed the face of transportation as we know it and got things rolling to where we are today. So why do these ...

Rotor has announced an updated version of its INspider power meter designed for Shimano’s range of direct-mount mountain bike cranks. With a 100mm bolt circle diameter (BCD), the Rotor INspider MTB ...