What is the plastic strip on the lower side of the car door called?
2 Answers
The plastic strip on the lower side of the car door is called a side skirt or lower skirt. Here are specific details about the side skirt: 1. The side skirt refers to the skirt panels installed on both sides of the vehicle body, functioning similarly to an air dam to reduce airflow entering the underside of the car from the sides. It has a certain aerodynamic effect and can significantly reduce air resistance under certain conditions. This part is prone to damage due to its plastic material and susceptibility to scratches and impacts. 2. The side skirt is part of the vehicle's aerodynamic kit, with aesthetics being secondary. Proper installation can reduce the reverse airflow generated during driving. At high speeds, it creates a ground effect that enhances handling stability, much like the ground is sucking the chassis. It should be used in conjunction with front and rear spoiler skirts and is essential for modifications.
I often pay attention to the plastic strip on the lower side of the door when washing my car, which we commonly refer to as the door sill trim. It is a protective component fixed to the door sill, designed to prevent scratches or corrosion on the paint caused by shoes when getting in and out of the car. My car has this part, made of hard plastic, which easily attracts dust and mud, so I clean it once a week using a soft cloth and mild detergent. Once, while driving on a rural road, a stone damaged it, and I spent 300 yuan at the repair shop to replace it. The original part had a perfect fit, preventing rust issues. Nowadays, newer cars even come with illuminated versions, which look quite cool at night. I recommend checking the clips for firmness during maintenance, as simple upkeep can extend the door's lifespan.
