A tire groove is a narrow channel or rib that runs around the circumference of a tire. These grooves are essential to the proper function of the tire, as they help to evacuate water and other debris from beneath the tread surface. Tire grooves also provide biting edges that allow the tire grip the road surface in wet or icy conditions. Over time, however, tire grooves will wear down and eventually disappear. This can lead to reduced traction and an increased risk of hydroplaning. To maintain optimal traction and safety, it is essential to regularly inspect your tires and replace them when the grooves have worn away.