The recommended spot is on the fork leg which is on the same side as the side stand. This makes the system more invisible to by-passers when the bike is parked. At this point, most will find they need to extend the wires. For the tool-impaired or lazy installers this extension kit may be the way to go. This is due to wheel spin.
Tolerance is important.
Instructions that come with the BC700 call for a maximum distance of 5mm between the magnet and sensor. Keep these suggestions in mind. The sensor and magnet should be kept in the same direction at time of passing each other. You can not mount the sensor vertical and the magnet horizontal to each other. In our illustration below we located a spot for the magnet on the disk floater.