What is the explanation of car tire specification parameters?
2 Answers
Explanation of car tire specification parameters: Tire specifications generally consist of six parts: tire width, aspect ratio of tire cross-section, tire type code, rim diameter, load index, and speed rating. Tire width is a factor affecting the vehicle's fuel consumption. The wider the tire, the larger the contact area with the ground, which increases the friction between the tire and the ground. Consequently, more of the vehicle's kinetic energy is converted into frictional heat energy loss. For example, when traveling the same distance, wider tires tend to consume more fuel. The aspect ratio is a major factor affecting the vehicle's responsiveness to the road surface. Vehicles with lower aspect ratios have thinner tire sidewalls and greater pressure-bearing capacity, making them very sensitive to road conditions. This allows them to quickly transmit road surface signals to the driver, enhancing control, and is commonly seen in performance-oriented models. Higher aspect ratios result in thicker tire sidewalls, providing ample cushioning but poorer road feedback, especially during turns, which can feel more sluggish. This is typically found in comfort-oriented models.
I see you're asking about tire specifications, which is quite interesting. I consider myself a bit of a tire enthusiast and have spent time studying various parameters, such as those in 215/65 R16 95H, which hold some secrets. The 215 refers to the tire width in millimeters—the larger the number, the better the grip, but it also means less fuel efficiency. The 65 is the aspect ratio, a percentage value indicating the sidewall height relative to the total width—the higher the number, the thicker and more comfortable the tire. The R stands for radial construction, which most cars use nowadays. The 16 represents the rim diameter in inches, which must match your wheel size—don’t modify it randomly. The 95 is the load index, a number indicating the maximum load capacity—check your user manual to avoid overloading and blowouts. The H is the speed rating, with letters corresponding to the maximum speed—lower-rated tires can overheat and wear out quickly at high speeds. I always pay attention to these details during maintenance, regularly checking tire pressure and wear to improve driving safety and handling. My advice is to start with these parameters when choosing tires—don’t just go for the cheapest option and overlook performance.
