Is Filing Required for Roof Wrapping?

[VanTheo]

No filing is required. According to the Road Traffic Safety Law, if the modification of the vehicle's body color does not exceed 30%, there is no need to file with the vehicle management office. Below are some precautions related to color modification: Avoid rolling windows: After applying the color-changing film, avoid rolling the car windows for three days to prevent displacement of the film that hasn't fully adhered. Do not wash the car: Avoid washing the car for three days, but you can wipe the film surface with a wet towel, sponge, or soft cloth. For vehicles with a sunroof, avoid opening the sunroof while driving, especially at high speeds, within the first three days. After applying the color-changing film, owners need not worry about slight fogging or bubbling. Depending on weather conditions, bubbles and fogging will disappear within 2-4 weeks or longer.

[MacLorenzo]

I've noticed many friends are debating whether to register the roof wrap with authorities. Honestly, according to the current "Motor Vehicle Registration Regulations", just wrapping the roof usually doesn't require registration. The key here is the proportion of the vehicle's color change—the roof area is generally less than 30% of the entire car, so no need to worry. However, a heads-up: the color of the wrap matters. Those mirror-reflective or extremely bright colors like pink or fluorescent green might get you pulled over and fined, as they affect driving safety. I've seen friends opt for cheap, low-quality wraps to save money, only to have the original paint peeled off when removing them—totally not worth it. Also, if your car has a sunroof, make sure to leave a border around it when wrapping; otherwise, bubbles and peeling edges will look awful later on. Actually, registering only costs a small fee, so if you're really unsure, it's safest to check with the local DMV. You can also confirm if there are any special local regulations while you're at it.

[DeSamantha]

I'm quite familiar with this issue as I recently helped a friend deal with it. Generally, applying film to the roof alone doesn't require registration, but the key is what type of film you use. Remember two absolute no-gos: first, mirror films with reflectivity above 30%, and second, special colors like fire engine red or construction yellow. The safest options are matte black or regular solid colors – black roofs on white cars are particularly trendy right now. Also, pay attention to the installation quality; make sure the technician tucks the edges properly under the rubber seals, or they'll start peeling at highway speeds. As for costs, registering at the DMV only costs about as much as a milk tea, but I strongly recommend keeping your film receipt. I once saw traffic police at a Hangzhou toll station checking modifications, and vehicles with receipts proving legitimate materials were waved through immediately. That said, many people don't realize that overly thick films can shorten the lifespan of sunroof seals.

[DeArya]

After studying the new regulations carefully, I can confirm that applying a single roof wrap does not require registration! However, three details must be noted: First, the film's light transmittance must exceed 70%, especially for the sunroof area extending from the windshield. Second, don't follow some online trends by wrapping the A, B, and C pillars entirely in black, as this would exceed the permissible proportion of the vehicle's color change. Third, avoid choosing electroplated materials—some car owners have received warnings right after leaving the shop. I recommend taking photos of the VIN and the original car condition before applying the wrap, which can help during inspections. Currently, many cities check window films during inspections, but roof wraps are rarely scrutinized. The most cost-effective solution is to opt for reputable domestic brands—don't be tempted by a mere $30 price difference, as low-quality films can emit formaldehyde odors for years after summer exposure. This health cost must be considered carefully.