# How to Convert Gear Ratio to MPH?

If you know the gear ratio, tire diameter, and RPMs of your car at a given speed, you can easy calculate the exact miles per hour the car is traveling using a simple formula. This formula can be us... Read More »
http://www.ehow.com/how_6186285_convert-gear-ratio-mph.html

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## How to Convert Rpm & Speed to Gear Ratio?

Engine speed measures how quickly the gears rotate, in revolutions per minute. Speed, however, measures how fast the car travels, in miles per hour. Gear ratio relates the two, but to calculate gea... Read More »
http://www.ehow.com/how_6239507_convert-rpm-speed-gear-ratio.html

## The Difference Between Low Gear Ratio & High Gear Ratio?

Gears are used in a number of different machines, from cars to factory equipment to pedal-powered pushbikes. They all follow the same principles, though, using one toothed wheel to move another too... Read More »
http://www.ehow.com/facts_7568829_difference-ratio-high-gear-ratio.html

## How to Fix A/T Additional Gear Ratio Errors in First Gear?

Over time, your automatic transmission can break down and stop functioning. You may encounter issues such as additional gear ratios used in the first gear of your car's automatic transmission grind... Read More »

## How to Tell What Gear Ratio I Have?

There are a couple ways to tell what your gear ratio is. One is a vague method that will simply tell you if it is low or high, while the other is a specific method that will tell you exactly what y... Read More »
http://www.ehow.com/how_7595372_tell-gear-ratio.html

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