During the autumn and winter season of 2026/27, rainy weather can significantly impair driving safety, particularly due to raindrops accumulating on side mirrors, which obstructs rear visibility during turns or lane changes. A common household tip suggests using a raw potato to mitigate this issue. According to the technology portal Chip.de, the starch found in potatoes creates a thin film on the glass, causing rainwater to bead off more effectively [source:R1043083_1|Chip.de]. [1]
The application process involves cleaning the side mirrors with water and drying them with a clean microfiber cloth. A raw potato is then cut in half, and the fresh cut surface is gently rubbed across the entire mirror surface. While a light film may be visible initially, it largely disappears as it dries. [1]
The duration of this effect varies based on weather conditions; heavy rain, road spray, and wind can quickly remove the thin starch layer, necessitating reapplication. However, caution is advised against using excessive potato juice, as streaks or residues can worsen visibility under darkness or glare. Experts note that while this method provides a temporary solution, it is not a substitute for professional mirror sealants. Maintaining overall mirror cleanliness remains essential for safe driving. [1]
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