The use of front and rear fenders

The rear fender does not have the problem of wheel rotation and rubbing, but for aerodynamic considerations, the rear fender is slightly arched and protrudes outward. The fenders of some cars have been integrated with the body of the car and are produced in one go. But there are also cars with independent fenders, especially the front fenders, because the front fenders have more chances of collision, and the independent assembly is easy to replace as a whole.