Is it necessary to install rain guards on cars?
2 Answers
It is necessary to install rain guards on cars, but the decision should be based on the frequency of rain in the owner's region. If the area experiences frequent rainfall, it is recommended to install rain guards. The primary benefit of installing rain guards is to prevent rainwater from splashing into the car during rain. Although the windows can only be opened slightly, rain guards ensure proper air circulation inside the car, maintaining fresh air. Additionally, rain guards provide some shading effect, reducing the impact of strong side sunlight on driving visibility. When installing rain guards, it is essential to consider their quality from two aspects: the material and the adhesive strength. Some rain guards are made of resin, while others are made of plastic. In terms of thickness and flexibility, resin materials generally offer better quality. Poor-quality adhesive can affect the performance of rain guards. If the installation is not secure, heavy rain might wash the guards away.
Rain guards really depend on your usage habits. I've seen many cars equipped with them—the biggest advantage is being able to crack windows for ventilation during rainy days, especially in the stifling southern monsoon season where even a slight window opening invites pouring rain. With rain guards, you don’t have to worry about that. In summer, they also allow you to leave a gap for heat dissipation when parked under the sun, otherwise, the car interior can easily soar to 50°C. However, there are clear downsides: wind noise increases at high speeds, creating a whistling sound, and they may slightly obstruct the rearview mirror's visibility. Low-quality adhesive can degrade and fall off within half a year, leaving stubborn residue that’s a nightmare to clean. If you do install them, opt for light-colored, slim versions.
