Is it legal to modify a car's rear wing?

[LeMaddox]

Installing a rear wing on a car is considered illegal modification. Here are the relevant details about car modifications: 1. Laws and regulations: According to Article 16, Item 1 of the 'Road Traffic Safety Law of the People's Republic of China,' no unit or individual may assemble a motor vehicle or alter the registered structure, construction, or characteristics of a motor vehicle without authorization. 2. Penalty conditions: If an exaggeratedly large rear wing is installed without proper registration with the vehicle management department, once discovered by traffic police, it will result in point deductions and fines, typically 2 points deducted and a fine of 200 yuan. Vehicles with illegal modifications will not be issued a safety technical inspection qualification mark by the traffic management department. If it constitutes a violation of public security management, the public security authorities will impose penalties such as fines or detention in accordance with the relevant provisions of the 'Public Security Administration Punishment Law.'

[VonNathan]

As a seasoned driver with over a decade of experience, let me talk about this issue. Installing aftermarket spoilers is illegal in most parts of China unless pre-approved. According to the Road Traffic Safety Law, any modifications to a vehicle's appearance or structure require approval from traffic police authorities, otherwise they are considered illegal modifications. While spoilers can improve aerodynamics, exceeding height or size limits may affect annual inspections, and traffic police can issue penalty points and fines on the spot. I've seen many friends install oversized spoilers for novelty, only to be pulled over on highways, fined, and forced to remove them and reinstall original parts. I recommend checking local traffic regulations beforehand or choosing accessories that already comply with national standard GB 7258 for worry-free, safe, and compliant modifications. If you're serious about modifications, consult the vehicle management office first—don't wait until trouble strikes to regret it.

[JordanFitz]

Hey, as a young guy who loves car modifications, I find adding a spoiler really exciting, but when it comes to legality, you gotta be careful. In China, it's not straightforward—without proper registration, it's basically illegal, mainly because it might affect the car's overall balance. After installing a spoiler, my high-speed driving became much more stable, but I always worry about getting pulled over since traffic cops only check the registration certificate. Plus, a poorly installed spoiler might extend the body, increase drag, and even hurt fuel efficiency and safety. My advice to young enthusiasts: don’t act impulsively—consult a legit modification shop first. They know which designs can pass inspections. It’s fine to have fun, but keep it legal—opt for subtle tweaks rather than extreme race-style looks to avoid trouble on the road. The key is enjoying your ride without causing issues.

[DeNolan]

As a novice driver with only six months of experience, modifying the rear wing makes me nervous because I'm afraid it might be illegal and cause trouble. In China, altering the rear wing without filing for approval is considered a violation of regulations, as it changes the original design. Based on my research, adding a rear wing might make the car skid in rainy conditions or lose control in strong winds, potentially harming myself or others. If you really want to modify it, choose certified products and consult the 4S store first to ensure it doesn’t compromise safety. Don’t follow those online influencers who modify recklessly—it’s not worth the risk. The key is to prioritize safety and ensure it passes every inspection.