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.

The final drive gear ratio created by the relationship between the ring and pinion gears and the rotation of the driveshaft. In a 4.10:1 axle ratio, for example, the driveshaft will rotate 4.1 times for each rotation of the axle shaft (wheel).

The number of driveline revolutions necessary to turn an axle one time. With a 4.63 to 1 ratio, the driveline turns 4.63 times for each axle revolution. Higher numbers indicate more torque and slower road speed for a given engine speed. For example, a 4.63 to 1 ratio generates more torque than a 3.90 to 1.

The number of times the driveshaft rotates to turn the axle shaft one rotation. For example, if the driveshaft gear had 10 teeth and the axle shaft gear had 30 teeth, the driveshaft gear would have to turn three times to turn the axle shaft gear once. This translates to a ratio of three-to-one (3:1).

This is a number (3.07:1, 4.56:1, for example) expressing the ratio between driveshaft revolutions and wheel revolutions. A low numerical ratio allows the engine to work easier because it doesn't have to turn as fast. A high numerical ratio means that the engine has to turn more rpm's to move the wheels through the same number of turns.

The ratio between the pinion and ring gears in the differential that multiply the torque provided by the engine. It is the number of drive line revolutions required to turn the axle one time. For example, with a 4.10:1 axle the drive line turns 4.1 times for each full axle revolution. The higher the number, the more torque and thus more towing power. However, higher axle ration also mean less speed.

The number of times the drive shaft must turn to turn the axle one time. If you have a 3.73:1 axle ratio the drive shaft turns 3.73 times for each full turn of the axle. The higher the numeric value of the axle ratio the better the vehicle will tow, and the higher the numeric value the more gas you will use.

A number determined by dividing the tooth-count from the ring gear by the tooth-count of the pinion gear. A numerically "higher" result is a mechanically "lower" gear.(empty)

The relationship of revolutions of a tow vehicle's axle to that of its driveshaft or transaxle, e.g. 2.74:1.