It's called a hub.
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The center of a wheel or circle is called a hub.
hub
It is a hub.
At one particular moment, the part of the wheel at the bottom will not move at all, and the part at the top will move with twice 200 kph. This is with relation to the ground. With relation to the car, the outer part of the wheel will have a speed of 200 kph.At one particular moment, the part of the wheel at the bottom will not move at all, and the part at the top will move with twice 200 kph. This is with relation to the ground. With relation to the car, the outer part of the wheel will have a speed of 200 kph.At one particular moment, the part of the wheel at the bottom will not move at all, and the part at the top will move with twice 200 kph. This is with relation to the ground. With relation to the car, the outer part of the wheel will have a speed of 200 kph.At one particular moment, the part of the wheel at the bottom will not move at all, and the part at the top will move with twice 200 kph. This is with relation to the ground. With relation to the car, the outer part of the wheel will have a speed of 200 kph.
yes the wheel lugs bolt on to the hub The foregoing is correct, but in modern automobiles the hub is not actually "part" of the wheel. The hub is part of the axle assembly and the wheel is bolted onto the hub using lug bolts and lug nuts. Hope that helps.