What is the function of rain guards? Is it necessary to install them?
2 Answers
Rain guards can effectively prevent rainwater or strong wind from directly blowing into the car, improving ventilation efficiency; when driving in the rain, opening the window can also prevent the windows from fogging up. It is necessary to install them in rainy areas. Below is the relevant introduction: Functions of rain guards: In any environmental condition, they can maintain the flow of fresh air, ensuring the interior is suitable for human needs; due to maintaining fresh air circulation, they prevent glass from fogging up under any circumstances, which could otherwise affect visibility and operation, thereby enhancing driving safety. Quality of rain guards: The quality of rain guards mainly depends on two aspects. First is the material of the rain guards—some are made of plastic, while others are made of synthetic resin. Resin offers better quality in terms of thickness and flexibility. Second is the adhesive used for the rain guards—some domestic adhesives may not stick firmly or tightly, allowing rainwater to seep through the gaps during heavy rain. As for wind noise, there is actually little difference before and after installation.
I often drive long distances, and installing rain guards makes it much more convenient to crack the windows for ventilation on rainy days. Even with a slight window gap during rain, water doesn’t get in, and the interior fog clears quickly—especially useful for ventilation when parked on hot summer days. However, wind noise does increase noticeably, becoming quite loud at speeds above 80 km/h. Adhesive-type rain guards tend to peel off after about two years, while in-mount ones are more stable but require drilling. If you live in a rainy area or frequently smoke in the car, they’re worth installing; otherwise, for those who mostly park in garages, they’re unnecessary. Opt for acrylic material when installing—it’s the most durable—and avoid cheap, thin plastic ones that cost just a few bucks.
