The Driving Safety Indicators, or DSI for short, places percentages along the tread area, which wear out along with the tread. As a result, the DSI visually portrays the tread wear left on the tires, which enables the driver to follow the tire's wear rate. This notifies the driver when the tire is about to wear out, preventing them from being driven on in a worn-out state. The tire also sports a hydroplaning resistance measure. Next to the DSI numbers, there is a water drop symbol. When the water drop wears out, the tire is no longer considered to be safe to use in wet or winter weather conditions.