Calculate the tolerances of speedometer and the final velocity

Author of the original calculator (for Opel GT): Ruediger Cordes, http://opelgt.org

Modification for "Manta-A Website" and adaption to Manta-A by Ulrich Dickmann

Final modifications: Peter Lauko http://kripton.org

Blue fields = Input-/Option-modules

Yellow fields = Result modules

Tyre-width



[mm]
Tyre-cross-section


[%]
Wheel rim-Ø



[inch]
Differential gear[:1]  ¹
Gear: 
Worm gear[teeth] 
Gear transmission at final gear: 
Speedometer [way revolution]  **
at [rpm]: 
Diameter  [cm]
Tolerance of scale-display: *
[%]
Theoretical final velocity:
[km/h]
Extent unroll  [m]

* compared with standard-combination :

185/70x13 with 3,18 rear-axle, four-speed drive,
blue worm gear, 618-speedometer (e.g.: Manta-A GT/E).