
Normal tires should generally be replaced every 3 to 5 years, depending on their wear condition within the service period. Tires are circular elastic rubber products mounted on various vehicles or machinery to roll on the ground. They often operate under complex and demanding conditions, enduring various deformations, loads, forces, and high or low temperatures during driving. Therefore, tires must possess high load-bearing capacity, traction performance, and cushioning ability. Additionally, tires are required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used for tire production, highlighting the significant demand for rubber in tire manufacturing.

I've been driving long-distance transport for over a decade, and safety always comes first. Tires generally need replacement every 5 to 6 years because rubber hardens and becomes brittle with age, reducing grip and making the vehicle prone to skidding or losing control during rainy-day braking. I've witnessed too many accidents caused by aged tires, especially fatal high-speed blowouts. I recommend regularly checking the tread depth by inserting a one-yuan coin into the grooves; if the date mark beneath the tread becomes visible, it indicates insufficient depth—typically, anything below 2 mm is dangerous. Over time, small cracks may appear on the tire sidewalls, signaling loss of elasticity. Even with low mileage, such as driving only 2,000 to 3,000 kilometers a year, prolonged exposure to sunlight in parking lots accelerates tire aging. I personally check tire pressure every six months to maintain it within the normal range and avoid uneven wear. When replacing tires, opt for reputable brands for better durability. Never compromise on driving safety—regular maintenance is the best preventive measure.

As a budget-conscious car owner, I pay close attention to tire expenses. Normal tires should be replaced every 5 years or so, which can save significant fuel and maintenance costs. Worn tires have higher rolling resistance, increasing fuel consumption by 10% to 15%—costing dozens more in gas per month. Mileage-wise, it's recommended to inspect tires between 40,000 to 60,000 km and replace them if the tread is severely worn. However, I prioritize the time factor since rubber degrades with age. Delaying replacement risks cracked sidewalls or blowouts, leading to costly repairs. Personally, I replace mine every 4 years, opting for cost-effective models—slightly pricier upfront but economical long-term. Maintaining proper tire pressure (neither too low nor high) also affects fuel efficiency and lifespan. Parking in shade slows aging. New tires improve handling and safety. Tire maintenance is a small investment that pays off in savings and peace of mind.

I've been driving for most of my life and have changed tires countless times. Generally, they need to be replaced every 5 years, as they become hard over time, making the ride bumpy and uncomfortable. In terms of mileage, city driving requires replacement at around 50,000 kilometers, but even with less driving, the rubber still ages and cracks. I had an old tire that lasted 8 years, and its sidewall cracked on the highway—fortunately, nothing serious happened. Regularly check the wear indicators and cracks; when the tread depth drops to 1.6 millimeters, it's the limit. Parking in the shade helps slow oxidation. Get wheel balancing when changing tires to prevent vibrations. Don't forget to inspect the spare tire too—if it's been unused for too long, it should be replaced. Timely maintenance ensures peace of mind and safety.


