When there is dirt, dampness and slush on the street, the thresholds of the car cannot remain clean for quite objective reasons. The dirt that gets on them also gets into the car interior. Subsequently, it clings to the thresholds and clothing of the driver and passengers. Fortunately, you can slightly modify your favorite "swallow" to forget about the problem of dirt, if not completely, then at least to a large extent.
Why do car sills get dirty during bad weather? In fact, everything is very simple. This is due to the specificity of their design. Moreover, the larger the threshold, the worse things are with its purity (which is quite natural). In addition, practice shows that people with small stature are much more likely to get dirty on the thresholds of their car. And if you definitely can't do anything with the physical data of yourself, your beloved, then it is definitely possible to create something positive with the thresholds.
The real problem with dirt (especially in winter) is not only that it gets into interior and clothing, but also in the fact that along with it, numerous chemical reagents. They are far from the best effect on the "health" of thresholds, destroying the paintwork and thereby triggering the development of the corrosive process.
In order to solve the problem at least partially, the standard thresholds should be revised. Namely, it is necessary to install a protective coating and at the same time to reduce the "overhang" of the structure. You can do both with the help of special plastic pads. They will ensure the tightness of the entire body (and interior) together with the sills, as well as ensure a better fit of the door.
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To increase protection against sticking snow, vehicle sills can be periodically treated with hydrophobic compounds. For example, the WD-40 copes well with this task. The very bottom of the car for the winter can be covered with cannon fat. Finally, you should always try to take your time and get into the car carefully.
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If you want to know even more interesting things, then you should read about why remove mud flaps for the winter: something that was not told about in the driving school.
A source: https://novate.ru/blogs/311219/52933/