Hubcaps are decorative covers that are placed over the center portion of a car's wheel, also known as the hub. They are often made of plastic or metal and come in a variety of designs and colors to match the style of a car.
While hubcaps can enhance the appearance of a car, they are not necessary for its operation. Many modern cars come with alloy wheels that do not require hubcaps. However, if your car has steel wheels, hubcaps can help protect the wheel from dirt and debris and prevent rust and corrosion.
In summary, whether you need hubcaps or not depends on the type of wheels your car has and your personal preference for its appearance.