Tires form the flexible, treaded outer surface of a wheel, helping vehicles maintain grip, carry weight, and absorb bumps in the road. Tread patterns and rubber compounds affect traction, handling, and how well a tire performs in different weather and road conditions; tire designs also vary to suit different vehicles and uses. The collection includes names associated with tire makers, such as Goodyear, Pirelli, and Dunlop. These examples connect the category to the companies and products behind tires, while the subject itself spans many types of tires and driving conditions.