
The plastic above the tire is called a fender. The functions of the fender: 1. To prevent mud from splashing onto the car body or people, which could make them look unattractive; 2. To prevent mud from splashing onto the tie rods or ball joints, causing premature rusting; 3. To protect the car body from being scratched by debris kicked up during driving. Tires are circular elastic rubber products mounted on metal rims, designed to roll on the ground in various vehicles or machinery. They support the vehicle body, cushion external impacts, ensure contact with the road surface, and maintain the vehicle's driving performance. The functions of car tires: 1. To generate driving force, braking force, and lateral force through interaction with the road surface; 2. To bear the weight of the car; 3. To provide cushioning and shock absorption.

I've been driving for over 20 years. That plastic piece above the tire is called a wheel arch liner, mainly serving to block mud and water. During rainy days or when driving on dirt roads, it prevents mud and water splashes from reaching the car body, protecting the chassis from corrosion. Although it may seem insignificant, it's highly practical. Long-time drivers know it tends to accumulate dirt, so it's advisable to clean it with a soft brush during car washes. Otherwise, accumulated mud can cause odors and may even affect the cleanliness of the engine compartment. Checking for cracks is also important, especially for older cars where plastic deteriorates quickly. If it's damaged, get it repaired promptly. The repair isn't expensive, but neglecting it can lead to moisture intrusion and rust on the car body. There are no small matters when it comes to driving safety; paying attention to small details can save you a lot of money.

When I first started driving, I was also puzzled by this. After asking a friend, I learned it's called a wheel arch liner, which functions similarly to a mudguard, blocking the mud and water kicked up by the tires to prevent contamination inside the vehicle body. Beginners might overlook it, but in reality, it's essential to pay attention to it every time you wash the car. Accumulated mud can cause a musty smell and attract insects, which is quite annoying. Maintenance isn't difficult—just gently rinse it with a high-pressure water gun, and avoid scraping it with hard objects to prevent damage. If it gets damaged, replacing it isn't too troublesome, but don't delay, as it can affect the car's appearance and functionality. This small component is crucial for overall vehicle protection and deserves attention.

That is the wheel arch liner, made of plastic material, primarily designed to shield the engine compartment from contaminants splashed up by the tires, keeping it clean. Common issues include deformation from collisions or fatigue cracks. During inspection, check if the mounting screws are loose. Regular maintenance can extend its lifespan and prevent future troubles.


