What does a non-full-size spare tire mean?
2 Answers
A non-full-size spare tire means the tread width of the tire is different, usually smaller than the width of the four main tires. For example, if the normal tire width is 205, the width of a non-full-size spare tire is typically around 100 to 120, but the overall diameter of the tire remains the same as a full-size tire. The advantages of a non-full-size spare tire include saving space for the spare tire, reducing the weight of the spare tire, and lower manufacturing costs. However, because the spare tire is non-full-size and the tread width is different, it can lead to uneven braking force and driving force, potentially causing the vehicle to pull to one side. Therefore, it can only be used for short-term emergencies, especially on drive wheels, and the speed should not be too high.
The spare tire is not full-size, meaning it's smaller than your original tire. My car is designed this way to save trunk space, but it comes with many limitations. I remember once when I had a flat tire on the highway and switched to it, I could only drive under 80 km/h and had to replace it with a normal tire within 100 km. Manufacturers do this to reduce weight and cost, otherwise the trunk would be too full and affect storage. Driving with a small spare tire for a long time can cause wheel imbalance, leading to pulling or wear, so it's recommended to repair the original tire as soon as possible. It's okay for occasional use in the city, but don't count on it for long trips—safety first.
