What may occur if a vehicle is loaded with most of its weight on the steering axle?

When a vehicle is loaded with most of its weight on the steering axle, it can lead to hard steering and possible tire damage. This is because an excessive load on the steering axle results in increased weight and pressure on the front tires, which can make them harder to turn. The extra weight can also cause the tires to wear out more quickly due to the increased friction and heat generated during operation. Additionally, the steering components may experience undue stress, leading to faster deterioration or even mechanical failure.

In contrast, other outcomes such as better fuel efficiency or increased stability during turns are less likely since a vehicle's overall balance is compromised by an uneven weight distribution. Improved braking performance often hinges on an even distribution across axles; having most of the weight on the steering axle may not enhance braking capabilities, as the rear wheels could lose traction under heavy braking situations. Thus, the correct choice reflects the challenges associated with poor weight distribution on the steering axle.