How Do Engine Size and Axle Ratio Affect a Used Truck’s Towing Capacity?
Engine size determines raw horsepower and torque output, while a higher numerical axle ratio multiplies that engine torque to move heavier loads from a dead stop. A larger engine combined with a tow-oriented rear axle ratio maximizes a used truck’s tow rating, whereas a smaller engine or highway-geared axle restricts towing capacity even on identical…
