The wheels have rims integrated into the outside of the body to hold and have a good grip on the tire mounted on the wheel. The wheels are made of welded steel, a traditional material. Traditional materials are being replaced by composites and a few other advanced materials such as magnesium, light alloys and aluminum. With the help of nuts and bolts the tire is tightened to ensure that the tire does not come off the wheel and rotates straight. Rim: The beads we talked about earlier in the tire parts are placed on the rim and in some cases on the outer edge of the wheel. The outer edges of the rim are contoured to ensure correct shape on both sides. This is done to ensure that the rim is radically cylindrical and has a sloped inner wall so that the tire can be mounted on the rim. Bladder: The role of the bladder is to ensure that the air that is pumped into the bladder does not escape and provides smooth traction. The inner tubes are positioned inside the tire. Valve