In motorsports, a tire war occurs when there are more than one tire manufacturer exists in a series, often with different tire companies under contract with specific teams. Tire wars are often said to be undesirable for motorsports series since it often leads tire manufactures to push the limits of their tires in order to beat the competition which can lead to widespread tire failures across one event such as the 2005 United States Grand Prix or leading to one tire being more successful in said series regardless of the other car components, though others have argued that tire wars push innovation into series where there is one. Tire wars have occurred in series such as Formula One, NASCAR, Super GT, and MotoGP.