Where is the tire serial number located?
1 Answers
Serial numbers are located on both sides of the outer tire, indicating production numbers, manufacturer trademarks, size specifications, ply rating, maximum load and corresponding pressure, Chinese pinyin codes for tire cord fabric, installation requirements, and directional markings. Most tire model markings appear as 215/70R15. Meaning of the numbers: 215 represents the tire section width in millimeters, typically ranging from 145 to 285mm in 10mm intervals. 70 is the aspect ratio, which is the ratio of the tire sidewall height to the tire section width. Tires, generally made of wear-resistant rubber materials, come in solid and pneumatic types, with pneumatic tires consisting of inner and outer tires. Manufacturers usually set the tire lifespan at 3 years. If a vehicle drives 20,000 kilometers annually, replacement may be considered after 2 to 3 years. How to distinguish tire speed ratings: 91W on the tire represents the load index and speed rating, where W is the speed rating. The speed rating indicates the maximum speed a tire can achieve under specified load and pressure conditions on a flat road, with W's maximum speed being 270 km/h. 91 is the load index, representing the maximum load capacity under specified conditions.