To understand why the **sipes** are the element of the tire that causes the water on the pavement to move to the sides, it is important to know how tires work in rainy conditions.

- **Tires** have a part called the **tread**, which is in direct contact with the road. This tread has **grooves** that are essential for safety when driving on wet surfaces.

- The **grooves** in the tread allow the tire to **displace the water** it collects from the road. This is crucial to avoid **aquaplaning**, which occurs when the tire cannot expel all the water and the vehicle loses traction, skidding on the surface.

- The **sipes** are small grooves or cuts in the tread that help channel the water to the sides, improving the tire's grip in wet conditions. This reduces the risk of aquaplaning by allowing the water to be displaced efficiently.

Therefore, the **sipes** are fundamental for safety when driving on wet roads, as they facilitate the displacement of water to the sides, maintaining the tire's contact with the road.