What is the difference between 87h and 91v tires?
4 Answers
The differences between 87h and 91v tires are as follows: 1. Different representations: h and v indicate the maximum speed rating. h represents a maximum speed of 210 km/h, while v represents a maximum speed of 240 km/h, ensuring safety within this range. 87 and 91 refer to the load index of a single tire, but they represent different weight capacities. 2. Different maximum speeds under load: v stands for 240 km/h, while h represents 210 km/h. 3. Different stability levels: Both the load index and the maximum speed rating under load must be consistent, especially for tires on the same axle. Otherwise (during high-speed driving), it may affect the vehicle's handling stability and pose certain safety risks.
When looking at tire markings, I remember that 87 and 91 both refer to the load index, simply put, how much weight they can bear. 87 means a maximum load of 545 kg, while 91 means 615 kg—a difference of 70 kg. Don’t underestimate this; overloading can easily cause tire deformation or blowouts. H and V are speed ratings, with H representing a maximum of 210 km/h and V being 240 km/h, which greatly impacts high-speed driving. When changing tires, I opt for 91V because I often drive long distances—it offers better stability at high speeds and shorter braking distances. Vehicle weight also affects the choice; SUVs or those carrying more cargo need higher load ratings to prevent uneven wear. Checking tire pressure and wear is part of my daily routine to avoid skidding accidents. In short, the differences lie in load capacity and speed limits—choosing the right one improves safety and durability.
Before each tire change, I make it a habit to check those numbers and letters. Both 87 and 91 are load indexes, for example, 87 corresponds to a maximum load of 545 kg, while 91 is 615 kg, so choosing 91 means sturdier tires. H and V indicate speed ratings, with H allowing up to 210 km/h and V reaching 240 km/h, which is quite a difference. When doing it yourself, always check the vehicle manual for recommended specifications to avoid making unsafe choices. Aging tires or incorrect installation can easily lead to unstable braking or blowouts, so it's important to regularly check tire pressure and wear. There's also a cost difference—91V tires are usually more expensive, but safety comes first, especially in rainy conditions or when driving fast on mountain roads, where high-speed stability is crucial.
When choosing tires, pay attention to the difference between load indexes 87 and 91. 87 can bear a maximum of 545 kg, while 91 can handle 615 kg. A higher number means better load capacity and less risk of flattening. In speed ratings H and V, H has a maximum speed of 210 km/h, and V is rated for 240 km/h. For highway driving, V offers better stability. With decades of driving experience, I know these small differences impact safety—overloading or speeding can easily cause blowouts, so choose based on vehicle weight and driving habits. After switching to 91V, I noticed better handling and reduced tire noise. During maintenance, always check tire pressure and balance, and never skimp by buying lower specifications.
