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How to modify without breaking the law

2025-10-18 14:05:41 car

Title: How to modify without breaking the law? Analysis of popular modification topics across the Internet

With the popularity of car culture, more and more car owners hope to improve the personalization and performance of their cars through modifications. However, modifications must comply with laws and regulations, otherwise you may risk fines or even vehicle impoundment. This article combines the hot topics on the Internet in the past 10 days to compile a legal modification guide for everyone to help you achieve personalized upgrades of your car without breaking the law.

1. An inventory of recent hot modification topics

How to modify without breaking the law

hot topicsDiscussion popularitymain focus
Legal wheel hub modification sizehighHow to choose a wheel size that’s not illegal
Body color changeMiddle to highRegistration process and color restrictions
Exhaust system modificationhighLegal range of noise
Interior modificationmiddleInterior modifications that do not affect safety
Lighting modificationMiddle to highAllowed light colors and brightness

2. Guide to Legal Modification

1. Wheel hub modification

According to the "Motor Vehicle Registration Regulations", when modifying wheel hubs, you need to pay attention to:

  • Wheel size cannot exceed original factory specifications
  • The change in hub ET value shall not exceed ±10mm
  • It is prohibited to use modified wide-body wheel arches

2. Change of body color

The body color can be changed, but please note:

color typeIs it allowed?Remark
Normal colorallowNeed to be filed within 10 days
Special colors (electroplating, etc.)Banned in some areasPlease consult your local vehicle management office in advance.
Camouflage paintingprohibitSuspected imitation of military vehicles

3. Exhaust system modification

Special attention should be paid to exhaust modification:

  • It is prohibited to remove the silencer
  • Exhaust sound must not exceed 95 decibels
  • The three-way catalytic converter must not be removed

4. Interior modification

Relatively loose modification area:

Modification projectRestrictions
seatThe number and layout of seats must not be changed
steering wheelMust not affect airbag function
sound systemMust not affect driving safety

5. Lighting modification

Lighting modification regulations:

  • The color temperature of headlights must not exceed 6000K
  • The use of strobe lights is prohibited
  • Daytime running light color must be white or yellow

3. Modification equipment filing process

For modification projects that require filing, the process is as follows:

  1. Prepare vehicle registration certificate, driving license, and ID card
  2. Apply for changes at the local vehicle management office
  3. vehicle inspection
  4. Pay production fee
  5. Get a new driving license

4. Sharing of recent popular modification cases

Case typeModification highlightslegality
Mild off-road modificationInstall legal-height roof rackslegitimate
Performance appearance modificationOriginal size wheels + legal exhaustlegitimate
Interior luxury modificationLeather seats + multimedia system upgradelegitimate

5. Common illegal modification behaviors

The following modification behaviors are clearly illegal, please avoid:

  • Change the vehicle power system (brush ECU to increase power without filing)
  • Installation of turbocharger has not been registered
  • Remove the seats and repurpose the vehicle
  • Modified vehicle identification number

Conclusion:

Modification is a kind of car culture, but it must be carried out within the legal framework. We hope that through the compilation of this article, we can help car lovers avoid violating laws and regulations while enjoying the fun of modification. It is recommended that you understand the specific local regulations in detail before modification, and consult a professional agency if necessary to ensure that the modification plan is legal and compliant.

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