You're right!
Many people think you're stupid when you explain that if you get off the highway (or, in my case, after a night out) and wash your car, and the brake discs get wet, they'll quickly start to corrode.
Now, regarding the interior ventilation windows, it's not as easy to install them anymore, but with older models like the Golf 3, it used to be much quicker.
I would say that's how my first 2-3 pairs were like. Well, I learned something again

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