Should You Replace Two or Four Tires at a Time?

[DelAaliyah]

It is better to replace all four tires at once. Regardless of how many tires are replaced each time, it is essential to ensure that the wear level and tread pattern of the directional tires are completely consistent. If tires of the same pattern and model have uneven tread wear, the driver may experience steering pull during driving, leading to a different driving feel. This directly affects the driver's psychological experience. Therefore, if only one tire is replaced, the new tire should not be used as a directional tire. Below are methods to determine whether tires need replacement: 1. Severe wear: Each tire tread groove has a wear limit indicator, which is approximately 2mm thick. It is recommended to replace the tire when the tread thickness wears to about 4mm from the limit indicator, or about 6mm from the deepest part of the groove. 2. Severe aging: Observe the patterns on the tire tread and sidewalls. If cracks are widespread, it indicates severe tire aging. Even if the mileage is low or the usage time is short, the tires should be replaced promptly. Otherwise, aged tires, with weakened sidewall strength, are prone to blowouts at high speeds due to increased temperature.