Racers use slick tires, which are treadless, to achieve maximum grip on dry racetracks. The lack of grooves or treads on these tires means they have more rubber in contact with the ground, thus increasing friction and providing better traction. This allows the drivers to navigate corners at higher speeds without losing control, which is essential for competitive racing. However, slick tires are not suitable for wet or slippery conditions as they can lead to hydroplaning, which is why racing events use grooved tires when the track is wet. These tires are also not road legal and should only ever be used on the racetrack.