A spare tire is an extra tire that comes with a vehicle, designed to replace a flat or damaged tire. It is usually smaller and lighter than the regular tires, making it easier to handle. When a driver experiences a flat tire, they can use the spare tire to temporarily get back on the road until they can repair or replace the damaged tire. Most cars come with a spare tire stored in the trunk or under the vehicle. It's important for drivers to know how to change a tire and where the spare tire is located. Having a spare tire can be a lifesaver during unexpected situations, ensuring safety and convenience on the road.