Can New and Old Tires Be Used Together?
3 Answers
New and old tires cannot be used together. Tires are often used under complex and demanding conditions, enduring various deformations, loads, forces, and high and low temperatures during operation. Therefore, they must have high load-bearing performance, traction performance, and cushioning performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. Additional Information: Tire Validity Period: Since tires are rubber products and are subject to aging issues, consumers should pay special attention to the production date of the tires. Do Not Use Tires Without the CCC Mark: Automotive tires must be certified and marked with the certification mark before they can be manufactured, sold, imported, or used in other business activities. Tires without the molded CCC mark cannot guarantee safety.
I've been driving for over 20 years and have seen many car owners mix old and new tires to save money, but this is truly unsafe. Uneven tire wear leads to inconsistent grip, making it easy to skid or lose control when braking in the rain. I recommend replacing all tires at the same time, or at least replacing them in pairs on the same axle, such as both front or rear tires. Otherwise, new tires will wear out quickly, which is actually a waste of money. Regularly checking tire pressure and tread depth to ensure they are within safe limits can reduce the risk of accidents. Make it a habit to check once a month and take a quick look before driving—if any issues are found, address them early.
From a cost-saving perspective, I understand that mixing old and new tires can save some cash in the short term, but it's not cost-effective in the long run. The difference in friction between old and new tires leads to faster wear, meaning you'll need to replace tires more frequently, resulting in higher expenses. It's better to just replace two tires at a time, maintaining consistency on the same axle. For example, replace only the front or rear tires and pair them with the older ones. This ensures more stable braking on wet roads, avoiding unexpected repair costs. Tire pressure should be adjusted regularly to ensure balance, and rotating their positions every six months can extend their lifespan.
