Q:

# What can you do with a gear ratio calculator?

A:

A differential gear ratio calculator allows you to determine the effects of changing tire size, gear ratio and speed on engine RPMs in rear- and four-wheel drive vehicles. The differential gear ratio impacts vehicle speed, power and fuel economy and can be changed to increase one factor to the detriment of the others. Numerically higher ratios provide more low-end power, while numerically lower ratios give more top-end speed and fuel economy.

## Keep Learning

Changing differential gear ratio impacts engine RPMs, and a gear ratio calculator helps to determine the correct gear ratio to achieve a desired engine RPM range. Calculators such as the one available at YukonGear.com allow users to input constants such as desired ratio, tire height and speed to calculate engine RPMs with a variety of transmission types. YukonGear.com also provides factory-guided ideal engine RPM ranges to compare with the results of the calculation.

For applications such as moderate- or heavy-duty towing, a numerically higher gear ratio gives the engine more low-end power to make moving the heavier load easier on the transmission and engine. Changing tire size also impacts the engine RPM and the ability to deliver power to the wheels. A differential gear ratio calculator also allows users to calculate the impact of changing tire size while leaving other variables constant.

Sources:

## Related Questions

• A: Determine the axle gear ratio on the drive axle of any vehicle by lifting the vehicle, placing it in neutral, spinning a tire by hand, and measuring the nu... Full Answer >
Filed Under:
• A: Goodyear tire size charts include tire type, tire width, aspect ratio and rim diameter. Instructions for determining how much load a tire can support and t... Full Answer >
Filed Under:
• A: A tire size chart is used to translate the letters and numbers found on a tire's sidewall and contains information about tire class, width, aspect ratio, c... Full Answer >
Filed Under:
• A: The numbers on a tire size chart refer to the width of the tire, the aspect ratio between the height of the sidewall in proportion to the width of the tire... Full Answer >
Filed Under:
PEOPLE SEARCH FOR