Where is the tire number located?
2 Answers
The tire number is located on the sidewall of the tire, indicating the section width and aspect ratio as a percentage, with the unit in millimeters. Below is relevant information about tire indices: 1. Treadwear Index: Reflects the tire's wear resistance. A higher value indicates greater wear resistance, but also means the tire is harder and less comfortable, and vice versa. Generally, a treadwear index between 280-320 is considered moderate, theoretically allowing for approximately 100,000 kilometers of driving. 2. Traction Index: TRACTION represents the traction index, with the following letters indicating the level of traction, ranked from highest to lowest as AA, A, B, and C. 3. Temperature Grade Index: TEMPERATURE indicates the tire's temperature grade, with the following letter representing the tire's heat resistance level. For passenger car tires, the heat resistance grades from highest to lowest are A, B, and C.
As a long-haul truck driver, I always squat down to check the tire serial number location before each trip. It's usually engraved on the black rubber near the wheel hub on the tire sidewall, requiring me to turn the steering wheel or reposition the truck for better visibility. The code begins with 'DOT' followed by a string of characters. I make it a habit to photograph it with my phone for records. Last tire change, I discovered the new tires were actually manufactured six months earlier than the original ones, so I immediately had the shop replace them. Experienced drivers know this code reveals production dates - the last four digits like 1523 indicate the 15th week of 2023.
