gear ratio

Comparing tire size to axle gear ratio and how that affects power and fuel economy. About this Engine RPM / Tire Size chart: This chart of Tire sizes and axle gear ratios provide a general idea of the relationship between the tire size and the differential gear ratio in an axle, and the effect that ratio has on fuel economy and power output. The chart is based on … [Read more...] about Differential Gear Ratio to Tire Size Guide