Final answer:
Under loaded front axles can cause handling and safety issues such as reduced traction, steering stability, increased stopping distances, uneven tire wear, and potentially diminished braking effectiveness.
Step-by-step explanation:
Under loaded front axles on a vehicle can cause a variety of issues, particularly in the handling and safety of the vehicle. An under loaded front axle may result in insufficient weight on the front tires, leading to reduced traction and steering stability. This lack of traction can increase stopping distances and make the vehicle more susceptible to understeer where the vehicle turns less than what is commanded by the steering wheel. Furthermore, it may lead to uneven tire wear, with the rear tires wearing out more quickly due to bearing a more significant portion of the vehicle's weight. In severe cases, it could also affect the effectiveness of the front brakes, since brake force is partially dependent on the weight over the wheels.