Frame

Serving as the framework that holds all the components together. It's the foundation upon which the entire bicycle is built, and its design significantly affects the bike's performance, comfort, and intended use.

Wheels (bike)

Provide the link between the bicycle and the road, problems with the wheels can make a bike ride unpleasant or even dangerous.

Car Tire

Carries the load resulting from the weight of the vehicle, providing traction and stability.