Description: A spare wheel is an extra wheel carried in a vehicle, typically in the trunk or under the chassis, intended to replace a flat or damaged tire temporarily. It serves as a backup in case of emergencies, allowing drivers to continue their journey until the original tire can be repaired or replaced.

Description: Type 3.

Description: A tire valve stem is a small, cylindrical component protruding from a vehicle's wheel rim that serves as the access point for inflating or deflating the tire. It contains a valve core that can be opened or closed to control the flow of air into or out of the tire.