How wide must mud flaps be in relation to the tires?

In order to ensure that mud flaps effectively prevent road debris, mud, and water from being thrown up by the tires, they must extend at least as wide as the tires themselves. This width provides adequate coverage, helping to shield other vehicles from potential hazards and maintain safety on the roads.

When mud flaps are at least as wide as the tires, they serve their purpose effectively, keeping the area around the vehicle cleaner and reducing slip hazards. If the mud flaps were narrower, they would not adequately cover the areas subject to debris discharge, which could lead to road safety issues. Similarly, there is no requirement for mud flaps to be wider than the tires, as that might not add any additional benefits without compromising the vehicle’s design or aerodynamics.