What is the purpose of a non-full-size spare tire?

[EdenFitz]

Many mid-to-low-end vehicles provide non-full-size spare tires for two main purposes: first, to reduce costs; and second, to maximize trunk space. Since mid-to-low-end cars generally have smaller dimensions, using a non-full-size spare tire effectively increases the available trunk space. More details are as follows: 1. A non-full-size spare tire is slightly smaller in diameter and narrower in width compared to the regular tires. Its purpose is to serve as a temporary replacement, with a maximum speed limit of 80 km/h. 2. A full-size spare tire is identical to the regular tires on the vehicle, while a non-full-size spare is narrower and typically comes with a steel rim. It also has speed restrictions (not exceeding 80 km/h) and can only temporarily replace the original tire. 3. Both full-size and non-full-size spare tires are only meant for emergency use. They differ from the vehicle's four regular tires in terms of speed rating and load index and cannot be used as permanent replacements. Spare tires should only be used temporarily, with a maximum speed under 80 km/h and a travel distance not exceeding 100 kilometers.