Can the Spare Tire on a Car Be Used Long-Term?
2 Answers
The spare tire on a car cannot be used long-term. A spare tire is not meant to replace a regular tire for extended periods. Due to its infrequent use, it has relatively less friction with the ground. If you replace a regular tire with a spare, the differing friction coefficients, ground adhesion, and tire pressures among the four tires can negatively impact the vehicle's braking system, steering system, and suspension system over time, posing significant safety risks. When changing tires, bolts should be tightened diagonally to ensure even force distribution and prevent wobbling during driving. Additionally, when using a spare tire, it's important to monitor your speed—it is recommended not to exceed 90 kilometers per hour.
Honestly speaking, that spare tire is definitely not meant for long-term use. Most factory-equipped spares are designed for emergency purposes only – some are so small they look like motorcycle tires. Once installed, your car immediately turns into a lame donkey, making highway driving a nerve-wracking experience. Even if you're lucky enough to have a full-size spare, remember it's been sleeping in the trunk for years – the rubber has hardened and become brittle, reducing wet-road cornering grip by at least 20%. Not to mention the tread pattern mismatch with your regular tires. After just 100 kilometers, you'll feel the steering wheel pulling to one side. Keep this up long-term and your wheel alignment will be completely off – replacing a suspension system costs way more than buying proper tires. My neighbor tried saving money by using a spare for three months, and ended up with exposed steel belts from inner tire wear and a deformed wheel rim.
