Definitions for "Axle ratio"
Overall ratio between the engine revolutions (RPM) and that of the driven wheel. Final drive is determined by dividing the number of teeth on the ring gear by the number of teeth on the pinion gear.
The ratio between the number of rotations of a driveshaft to the number of rotations of the drive axles. Axle ratio is determined in gearing inside the differential.
Ratio between pinion and ring gears in the differential that multiplies torque provided by the engine. It describes the number of driveline revolutions required to turn the axle one time. With a 4.10:1 axle, the driveline turns 4.1 times for each full axle revolution. Higher numbers mean more torque and less road speed for a given engine speed; i.e., a 4.10:1 ratio provides more torque than a 3.73:1.