Space-saver spares are designed for emergency use only. They are designed to get you to a service center where you can have the regular tire fixed or buy a new one.
When provided with the vehicle as part of the original manufacturer’s equipment, most manufacturers warn not to exceed 50 miles per hour or 80 kilometers per hour and not to go further than 50 miles or 80 kilometers on the space saver tire.
Some cars are provided with miniature or collapsible space-saver spare tires as spare wheels. These normally require a specially charged canister for inflation when being installed.
Others have small, temporary spare tires that are inflated normally with a compressed air supply but to a much higher pressure than normal road tires.
