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Video Formulary

Video Generally
Video Axle Load Distribution
Video Payload Distribution
Video Braking Distance
Video Driving Force
Video Work/Energy
Video Radian Measure
Video Tension (brake)
Video Brake Force
Video Brake Pedal
Video Brake Force (wheel)
Video De-/Acceleration
Video Braking Distance
Video Braking Period
Video CO2 emission
Video Density
Video Torque
Video Pressure
Video Injection Quatity
Video Electrical Power
Video Riding Speed
Video Centrifugal Force
Video Gas Speed
Video Speed
Video Coaxial Gearbox
Video Lever Ratio
Video Hollow Cylinder
Video Stroke-bore Ratio
Video Displacement
Video Power Output p.l.
Video Hydraulic Ratio
Video Capacity
Video Piston Speed
Video Piston Force
Video Force
Video Crank Mechan. Forces
Video Fuel Consumption 1
Video Fuel Consumption 2
Video Fuel Consumption 3
Video Ciruit Area
Video Circuit Ring
Video Circumference
Video Clutch Pedal
Video Power (mechanical)
Video Power (effective)
Video Power (indicated)
Video Efficiency Weight
Video Wire Resistance
Video Steering Ratio
Video Volumetric Efficiency
Video Air Ratio
Video Venturi
Video Air Resistance
Video Parallel Circuit
Video Planetary Gearbox
Video Percent
Video Rectangle
Video Rectangle Column
Video Friction Force
Video Tyre Calculation
Video Serial Circuit
Video Rolling Resistance
Video Cam Dwell
Video Dwell Period
Video Slip
Video Spread of Gears
Video Climbing Resistance
Video Ratio
Video Circumference speed
Video Conversions
Video Not Coaxial Gearbox
Video Valve Opening Area
Video Valve Opening Angle
Video Valve Opening Period
Video Compression Ratio 1
Video Compression Ratio 2
Video Amount of Heat
Video Resistance
Video Efficiency
Video Cube
Video Ignition Interval
Video Cylinder

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Formulary Tyre Calculation

Rim-diameter + twice the tyre-height = tyre-diameter

The dynamic wheel-radius cannot be determined from the tyre description, indeed, the radius/diameter can. The precision is limited, because in the case of, e.g., the tyre-width, we're dealing with a grid dimension. Regardless of whether the tyre is 209 mm or 201 mm wide, the tyre always has the description '205'.

Tyre heightRim diameter
Top to bottomTyre
height to width
Inch -> mm









dR: Tyre diameter in mm, cm, dm, m
b: Tyre width in mm, cm, dm, m
h/b: Ratio from height to width in percent
dF: Rim diameter in inch

160/60 ZR 17

b = 160 mm; h/b = 60; dF = 17 Zoll

205/65 R 15 86T

b = 205 mm; h/b = 65; dF = 15 Zoll

Check your calculation!     You need help?
Insert numbers only in three of the four fields!
1. Tyre width mm cm dm m
2. Ratio from height/width   percent
3. Rim diameter   inch
4. Tyre diameter mm cm dm m
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2001-2014 Copyright programs, texts, animations, pictures: H. Huppertz - Email
Translator: Don Leslie - Email:

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