WikiPedalia is not endorsed or affiliated with the Wikimedia Foundation.
Siping
From WikiPedalia
Siping is the use of narrow grooves in the tread of a tire. The purpose of this is to allow water to escape instead of being trapped between the tire and the road, causing "hydroplaning."
Bicycle tires have such a small contact patch and run at such high pressures that hydroplaning is an imaginary problem, even with completely slick tires.
