The clue in the crossword puzzle is referring to an object that is used on vehicles and once it is worn out, it needs to be replaced. The answer to the crossword question is TIRE. A tire is a rubber-made component of a vehicle’s wheel that is responsible for making contact with the road. Over time, due to the friction with the road, the tire’s tread wears out, reducing its effectiveness and safety. Worn-out tires can reduce grip, cause skidding, and increase the risk of accidents. Therefore, it is essential to get rid of tires that are no longer effective to maintain safety on the roads.