# How to Calculate the Diameter of a Car Wheel?

Calculating the overall diameter of the wheel, including the rim and tire, allows you to ensure adherence to specifications when changing wheel sizes. This is helpful in maintaining proper speedome...
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http://www.ehow.com/how_7435040_calculate-diameter-car-wheel.html

## How to Calculate Speed Based on Wheel Speed & Tire Diameter?

A vehicle transfers power from the engine through the transmission and differential. The gears in these components result in a wheel speed expressed in revolutions per minute (rpm). From the wheel ...
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http://www.ehow.com/how_7445086_calculate-wheel-speed-tire-diameter.html

## How to Calculate an Internal Diameter?

Hollow everyday circular objects appear differently than drawn two-dimensional circles. Objects like pipes and hoses have two different diameters. The outside diameter measures the distance of a st...
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http://www.ehow.com/how_7919156_calculate-internal-diameter.html

## How to Calculate the Area & Diameter?

A diameter specifies the size of a circle and is the length of the line segment that passes through the circle's center. You can calculate the diameter from the length of the circle circumference; ...
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http://www.ehow.com/how_6447279_calculate-area-diameter.html

## How to Calculate the Diameter of Wire?

When preparing to choose wire stock for your electrical job you need to know the diameter of the wire to determine what electrical load it can handle and over what distance. If you are purchasing n...
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http://www.ehow.com/how_6456694_calculate-diameter-wire.html