# 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...
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http://www.ehow.com/how_6186285_convert-gear-ratio-mph.html

## 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...
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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...
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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...
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http://www.ehow.com/how_12133386_fix-t-additional-gear-ratio-errors-first-gear.html

## How to Determine GMC Gear Ratio?

The gear ratio of a vehicle determines whether the vehicle will have more low end power or high end speed. A vehicle that has a lower gear in the rear differential usually gets less fuel mileage, w...
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http://www.ehow.com/how_7529824_determine-gmc-gear-ratio.html