What is the effect of under-inflated tires?

Under-inflated tires can significantly impact the performance of an aircraft during landing. When the tire pressure is lower than recommended, it can lead to increased rolling resistance and traction on the runway. This change in tire deformation causes the tire to have a larger contact patch with the surface, which can sometimes result in increased creep.

Creep refers to the ability of a tire to slip relative to the wheel it is mounted on. With under-inflated tires, the sidewalls are more susceptible to flexing and deforming under load, which can lead to a greater displacement between the tire tread and the wheel during high-stress situations like landing. This can cause the tire to slip or creep on the wheel, affecting braking effectiveness and overall control of the aircraft during critical phases of landing.

In contrast, the other statements suggest that under-inflated tires provide beneficial effects like better traction or reduced likelihood of slipping, which contradicts the reality of tire dynamics. Proper tire inflation is crucial for maintaining optimal handling and safety, especially during landing scenarios.