A live axle is a type of axle that is connected to the vehicle's wheels and rotates with them. This design allows the wheels to receive power directly from the engine, making it an essential component in many vehicles, especially in off-road and heavy-duty applications. Live axles provide better traction and stability, particularly in rough terrain. In a live axle system, both wheels on an axle are linked, meaning they turn together. This can help distribute power evenly, but it may also limit the independent movement of each wheel. Live axles are commonly found in vehicles like trucks, SUVs, and some classic cars.