How does the axle ratio affect fuel economy?
How does the axle ratio affect fuel economy? Additionally, the fuel economy gains or losses from an axle ratio change may be directly offset by the transmission selected. The transmission gearing directly affects the fuel economy at a given speed. The engine's rpm and fuel consumption are generally lower in higher gears. What should the axle ratio be for a fifth wheel? If you plan on towing a fifth-wheel trailer or anything heavier than 5,000 pounds, you should consider a 4.1 axle ratio. A 4.1 ratio allows a towing vehicle to start moving without as much throttle. How does a...