How to Modify a Car Without Breaking the Law?

2 Answers
VonJoy
07/29/25 2:31am
Modifying a car within the limits permitted by laws and regulations will not be illegal. Legal modifications include: When modifying the interior, as long as it does not affect the structure of the car itself, it will not be illegal; placing small decals on the body, as long as they do not obscure the license plate and do not exceed 30% of the body area, generally does not require reporting to the traffic management department; changing the color of the body must be registered with the vehicle management office; installing additional vehicle components, such as front and rear anti-collision guards, will not be illegal as long as it does not compromise the car's safety performance. Car modification: Refers to replacing, adding, or removing parts from the original factory model or altering its appearance. Reasonable and scientific modifications can make the original car safer to drive and improve its performance. Car modification is both an expression of personal style and a means to enhance driving performance and safety.
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SanPaislee
08/12/25 6:29am
To legally modify your car, I think the key is understanding which parts can be altered without breaking the law. You can change the body color, but avoid imitating special colors used by police or fire trucks, and you must register the change at the vehicle management office within 10 days. You can also swap the wheel rims for a different style, but they must be the exact same size as the original, and the tire specifications cannot be changed. Installing a roof rack is fine, as long as the height doesn’t exceed 30 cm. For the interior, you actually have a lot of freedom—leather seat covers, ambient lighting, etc., are all acceptable, as long as they don’t obstruct visibility or compromise safety. I once installed running boards, but you have to make sure they don’t extend beyond the width of the car. The general rule is: if you modify the exterior, you must register it; for mechanical parts like the engine, exhaust pipe, or chassis structure—don’t touch them, as these are strict no-go zones. The registration process is simple: bring your ID and vehicle license, and the vehicle management office can update the photos and registration in about half an hour.
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