Hello, the choice of light transmittance for car side window film mainly depends on your personal needs and preferences, as well as driving safety considerations. Here are some suggestions for your reference:
Legal Requirements and Windshield Standards: The light transmittance of the windshield must reach at least 70%, which is a legal requirement and a mandatory item during vehicle inspection. While there is no uniform legal requirement for the light transmittance of side window film, careful selection is still necessary to ensure driving safety.
Recommended Light Transmittance for Side Window Film: A light transmittance between 20% and 35% is generally ideal for side window film. This level of transmittance protects privacy while ensuring safety during nighttime driving. If you choose a film with lower light transmittance, it is recommended to leave a small triangular area near the rearview mirror to ensure driving safety.
Precautions: Side window film with lower light transmittance may affect visibility at night or in low-light conditions, so drivers need to pay special attention. When choosing a side window film, it is necessary to weigh the balance between blocking light and maintaining a clear view.
