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4x4 Off-Road Calculators Menu
Gear Ratio
Gear Ratio Calculator
Tire Size
Changing Tire Size Calculator
Metric Tire
Convert Metric Tire size to inches
Ramp Travel
Ramp Travel Index Calculator
Ring and Pinion
Ring and Pinion Gear Ratio Calculator
Speedometer
Speedometer actual speed calculator
Liters to Cubic Inches
Convert Engine Liters to Cubic Inch Displacement (CID)
Dyno
Calculate Horse Power Dynometer Calculator
Gear Ratio Chart
Simple Chart showing common gear ratios
Blood Alcohol Content
Don't Drink and Drive BAC Calculator