Tyre (or tire) is a circular and ring-like part of a vehicle which comes in contact with ground. Tyres are fitted on rims and are filled with compressed air. Since their invention, natural rubber is the most widely used material in manufacturing of tyres. However, modern tyres also employ materials like synthetic rubber, fabric, steel wires, carbon black and some more compounds. Tyres find place in wide range of locomotives, from bicycles to aeroplanes.
- To maintain contact between vehicle and ground by providing desired traction.
- To support the load of vehicle.
- Dealing with various forces acting on vehicle during its motion.
- Providing cushion against shocks and damping them.