If your car door and hatch locks tend to become stiff, avoid breaking your key off in the lock by lubricating them periodically with a penetrating oil spray. https://www.webwiki.at/auto-works.cc/%D9%83%D9%81%D8%B1%D8%A7%D8%AA-%D8%B1%D9%88%D8%AF%D8%B3%D8%AA%D9%88%D9%86-%D9%83%D9%81%D8%B1%D8%A7%D8%AA-%D8%B1%D9%88%D8%AF%D8%B3%D8%AA%D9%88%D9%86-275-65r-18-275-65r-18