How to Read Tire Batch Numbers?
2 Answers
The production batch number of a tire: Look for the marking on the sidewall that reads "**A**C****", where "*" represents a digit, and "A and C" represent any English letter. A combination of numbers and letters is used as a "mark" to indicate the manufacturing year, month, and quantity, also known as the "production batch number". For example, "97N08C1820" means the 1820th tire produced in group C in August 1997. The production batch number is used to identify the age and storage time of the tire. There are many numbers and letters on a tire. Taking 225/50-R18-94H-ZG as an example, here is a detailed analysis of their meanings: 1. 225: Indicates the tire's section width is 225mm; 50: Indicates the tire's aspect ratio is 50%; ZG: Indicates the tire type is steel-belted radial tire. 2. R18: Indicates the wheel diameter is 18 inches; 94: Indicates the maximum load capacity of a single tire is 670kg; H: Indicates the maximum speed of the vehicle should not exceed 210km/h.
When we usually maintain our vehicles, we always pay attention to the tire date. In fact, the batch number is printed on the side of the tire, just look for the four-digit number inside the square. The first two digits represent the week of production, for example, 07 means the seventh week; the last two digits represent the year, so 23 means it was produced in 2023. Like me, I always check this set of numbers every time I change tires because the rubber starts to age after three years, and if I see tires from 2018, I replace them directly. Also, when parking, avoid direct sunlight on the tires as rubber is most afraid of UV rays—I even installed sunshades in my garage specifically for this. Even if the tread isn’t worn out, it’s recommended to replace tires five years after production—safety comes first!
