Deve's Technical Network
1947-1955 1st Chevy Trucks
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Axle Ratio/Tire Size Calculators
These calculators were created by Mark Medina - http://www.4lo.com

Here are a few calculators that may be useful in deciding tire size, gear ratios, and other stuff. Stop by 4lo.com for these calculators and more!

Speedometer Converter
Original Tire Diameter:
New Tire Diameter:
Speedometer Reading:
Corrected Speed (mph):
Find New Gear Ratio With New Tire Size
New Tire Diameter:
Old Tire Diameter:
Current Gear Ratio:
New Gear Ratio:
Find Overall Crawl Ratio
Transmiss Ratio: TransCase Ratio:
Axle Ratio:
Overall Ratio:
Find MPH
RPM: Tire Diameter: Axle Ratio:
Transmiss Ratio: TransCas Ratio:
MPH:
Find RPM
MPH: Tire Diameter: Axle Ratio:
Transmiss Ratio: TransCas Ratio:
RPM:
Convert P-Metric Tire To Tire Diameter Inches
Example: 195/75R15
/ R
Tire Diameter: