What do tread sipes provide when they are molded into the tire's blocks?

Tread sipes are small, shallow slits or grooves molded into the blocks of a tire's tread. Their primary purpose is to enhance the tire's grip on surfaces, particularly in challenging conditions like wet, snowy, or icy environments. When sipes flex, they create additional edges that can grip the road, improving traction significantly. This added traction helps prevent slipping, providing a safer driving experience in inclement weather.

While improved fuel efficiency, enhanced durability, and reduced noise level are important attributes of tires, they are not the primary function of tread sipes. The design and arrangement of sipes specifically target performance in adverse conditions, making them critical for optimal safety and handling when facing rain or snow.