What is the difference between 97h and 97v?
1 Answers
The main difference between the two tires lies in their maximum speed tolerance. The speed rating indicates the highest speed a tire can achieve under specified load and inflation pressure standards. 'V' and 'H' are speed ratings, where 97v has a designed maximum speed of 240 km/h, and 97h has 210 km/h. Both specifications share the same load index, with a maximum load capacity of 730 KG. Common vehicle models in the market mostly use H and V ratings, while some high-performance vehicles use W and Y. Tire specifications are data that indicate the geometric parameters and physical performance of a tire. There are three methods to represent tire specifications: metric (m), metric-imperial hybrid, and imperial. Imperial tire specifications are often represented by a set of numbers, where the first number indicates the tire section width, and the second number indicates the rim diameter, both in inches. On tires, the most common identifiers are the tire brand, followed by the tire specifications, then the load index and speed rating. The speed rating is the maximum speed limit determined during the design and production of the tire after considering various factors and tests. Exceeding this speed can lead to multiple safety hazards. Generally, all-terrain tires (AT) have lower speed ratings compared to highway tires to account for off-road performance. Load index and inflation pressure. These usually indicate the maximum load and corresponding pressure. The load is measured in 'kilograms,' and the pressure refers to the tire's inflation pressure, measured in 'kilopascals.' The wear limit of the tire is marked with rubber strips or blocks on the side. When the tire wear approaches about 4mm from this limit, it's time to consider replacing the tire. The so-called three 'T's refer to Treadwear (wear resistance), Traction (traction performance), and Temperature (temperature resistance), often seen together on the tire sidewall. These three indicators, besides the conventional size, speed rating, and load index, can be used to select tires based on their three 'T' ratings, which are lesser-known to consumers. In addition to the model, tires also carry the following common data: Tire cord material: Represented by Chinese pinyin, such as M for cotton cord, R for rayon cord, N for nylon cord, G for steel cord, and ZG for steel radial cord. Speed rating: Indicates the maximum speed a tire can carry a specified load under specified conditions. Letters from A to Z represent certified speed ratings from 4.8 km/h to 300 km/h. Common speed ratings include: Q: 160 km/h; H: 210 km/h; V: 240 km/h; W: 270 km/h; Y: 300 km/h. Rim specification: Indicates the rim size compatible with the tire for practical use, such as standard rim 5.00F.
