Automotive Brake Calculator

 


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Brake Calculator
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You can print this page as a work sheet to write down numbers while measuring/collecting data on your car.

For best results, print the PDF version (opens in a new tab; Adobe Reader required).

  Standard Metric
Weight of car under front wheels lb kg
Weight of car under rear wheels lb kg
Aerodynamic down force at top speed lbf kgf
Wheelbase of car in mm
Distance from front axle to center of down force in mm
For use in CG-Height Calculator: ================== ==================
Height of rear wheels raised above front wheels in mm
Weight under front wheels with rear wheels raised lb kg
  ================== ==================
Distance from CG to ground (= CG-Height) in mm
For use in Piston Area Calculator: ================== ==================
Diameter of piston 1 in front brake caliper in mm
Diameter of piston 2 in front brake caliper in mm
Diameter of piston 3 in front brake caliper in mm
Diameter of Piston 1 in rear brake caliper in mm
Diameter of piston 2 in rear brake caliper in mm
  ================== ==================
Total area of front brake caliper pistons in² mm²
Total area of rear brake caliper pistons in² mm²
Effective radius of front brake rotors in mm
Effective radius of rear brake rotors in mm
Rolling radius of front tires in mm
Rolling radius of rear tires in mm
Coefficient of friction of front tires
Coefficient of friction of rear tires
Coefficient of friction of front brake pads
Coefficient of friction of rear brake pads
Tandem master or dual master cylinders
Brake booster assist ratio : 1 : 1
Brake pedal ratio : 1 : 1
Force on brake pedal for maximum deceleration lb kg

 

 

Last Update: 01/01/2017
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