The fender is the outer body plate that covers the wheel. It is named for the shape and position of this part of the old car body that resembles a bird wing. According to the installation position, the front fender is divided into front fender and rear fender. The front fender is installed at the front wheel, which must ensure the maximum limit space when the front wheel rotates and pulsates. Therefore, the designer will verify the design size of the fender with the "wheel pulsation diagram" according to the selected tire model size.