# Gear Design Equations and Formulas Calculator

## Automobile Car Truck

Solving For Metric Tire Diameter Size to Inches

Inputs:
 section width meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard aspect ratio rim diameter meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard

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#### Conversions:

 section width = 0 = 0 millimeter aspect ratio = 0 = 0 rim diameter = 0 = 0 inch

#### Solution:

 tire diameter = HAS NOT BEEN CALCULATED

#### Other Units:

Change Equation
Select an equation to solve for a different unknown

 speed rotation velocity gear ratio tire size - radius effective gear ratio tire size - diameter crawl ratio

Where
 speed = MPH - miles per hour tire radius, tire diameter, rim diameter = inches gear ratio = if ring and pinion ratio is 4.10:1 use 4.10 rotation velocity = RPM - revolutions per minute effective gear ratio = determine new gear ratio after a tire size change crawl ratio = four wheel drive rear axle differential, transfer case low range and transmission ratios section width = millimeters aspect ratio = unitless

References - Books:

See 3 and 4 on reference page

by Jimmy Raymond