Welcome to the VDO Speedometer Pulse Calculator

All credit to this great post by The Great Fandango on the WSCC Forums

Enter your wheel size below

Enter the number of bolts on the driveshaft

Calculate!

[A] = 13 x 25.4mm = 330.2mm
[B] = 60% of 185 = 111.00mm

Diameter = [A] + (2 x [B]) = 552.2mm

Circumference = 1734.79mm
1 Mile = 1609344mm

Revolutions per mile = 927.69

Pulses per mile = 4 x 927.69

=

3711