Kenda K546F / K547 Speed Racer Tires The Kenda Speed Racer Tires come with a directional sport-focused design for hard surface riding and racing. When used with a softer touch, these tires prove particularly kind to turf surfaces. Its sportscar-inspired look is sure to turn heads. Features: Excellent design for harder surface sport riding 4 ply assembly Low-void tread pattern for reduced road noise and improved traction Directional tread pattern Not for on-highway use Not DOT approved For off highway use only