# 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 Speed Based on Gear Ratios?

Gear ratio can have a profound effect on how your vehicle performs. Moving to a higher (numerically lower) ratio can improve your freeway mileage because your engine is turning fewer RPMs, but the ...
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http://www.ehow.com/how_7448906_calculate-speed-based-gear-ratios.html

## How to calculate internet speed based on number of users?

What speed you need depends heavily on what your six guys are doing. If they are all streaming Netflix, then you can easily fill a 30 Mbps or even 50 Mbps service. If they are just surfing the we...
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http://answers.yahoo.com/question/index?qid=20130423163133AAQULiK

## How to Calculate Diameter Based on Circumference?

The formulas you learn in geometry class have uses in real life; you cannot easily measure the diameter of a living tree, for example, but you can measure its circumference. The mathematical consta...
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http://www.ehow.com/how_8185917_calculate-diameter-based-circumference.html

## 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