Compact temporary spares, often called “donuts” or “space-savers,” are designed for limited emergency use following a flat tire. These spares differ significantly from full-size spares in their construction, tread depth, and speed limitations. They are intended to provide mobility for a short distance, enabling the driver to reach a tire repair shop or a safe location for a full-size spare replacement. Typically, operating limits are outlined on the spare itself or in the vehicle’s owner’s manual.
Maintaining mobility after a flat tire is essential for safety and convenience. Temporary spares allow drivers to avoid being stranded on the roadside. Their compact size contributes to fuel efficiency and reduces vehicle weight when not in use. Historically, vehicles often came with full-size spares. However, the increasing emphasis on fuel economy and cargo space has led to the adoption of smaller, temporary spares.