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What does 105w tire mean?

2 Answers

EvangelineRose

07/24/25 3:38pm

In the 105w on the tire, 105 is the load index of the tire, and the corresponding maximum load per tire is 925KG; w represents the speed rating of the tire, with W indicating a maximum speed of 270km/h. The load index is molded on the sidewall, indicating the maximum load limit of the tire. For driving safety, this load limit must not be exceeded. Overloaded tires may accumulate excessive heat and lead to sudden failure. The definition of the tire load index: It refers to the maximum load that the tire can carry when inflated to the specified pressure. It is usually represented by a number. The definition of the tire speed rating: It refers to the maximum speed allowed for the tire, generally indicated by uppercase English letters and marked on the sidewall of the tire. In addition to the model, the tire also displays the following common data: Tire cord material: Represented by Chinese pinyin, such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cord tire. Speed rating: Indicates the maximum speed at which the tire can carry the specified load under specified conditions. Letters from A to Z represent the certified speed ratings of the tire from 4.8km/h to 300km/h. Common speed ratings include: Q: 160km/h; H: 210km/h; V: 240km/h; W: 270km/h; Y: 300km/h.

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LeReid

08/11/25 8:42am

Speaking of 105w tires, these are the load index and speed rating codes in tire specifications. As a driver with many years of experience, I always pay attention to tire parameters when driving daily. 105 indicates the load capacity index, for example, 105 corresponds to each tire carrying approximately 925 kilograms. The 'w' represents the speed rating, meaning the tire can withstand a maximum speed of 270 kilometers per hour. This small marking can be seen on the tire sidewall, so don't overlook it. When replacing tires, it's essential to match the original factory specifications. If the load index is too low, carrying heavy loads might cause the tire to burst; if the speed rating is insufficient, driving fast can lead to accidents. It's recommended that car owners check tire pressure and wear during every maintenance, especially before long trips or when carrying heavy loads. Don't just compare prices when choosing tires—safety comes first. In winter, you might need to switch to snow tires with different specifications.

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