Tyres are treaded to increase friction and provide better grip on the road surface. The treads on a tyre help to channel water, mud, and other debris away from the contact patch of the tyre, which helps to maintain traction and prevent hydroplaning. Treads also help to increase the longevity of the tyre by reducing wear and tear on the rubber. While the appearance of a tyre may be improved with a tread pattern, this is not the main purpose of treading. Increasing the weight of a tyre through treading is also not a desired outcome, as heavier tyres can negatively affect fuel efficiency and vehicle performance.