What Are the Specifications and Models of Tires?
2 Answers
Common tire model specifications typically include 185/65R14, 185/65R15, and 205/55R16. Below is an example of size specifications, using 195/55R15 as an illustration: 1. 195: Section width, which refers to the area of the tire that can contact the ground, measured in millimeters. 2. 55: Aspect ratio, which is the ratio of the tire's section height to its section width. 3. R: Construction code, where R stands for radial tire. Bias-ply tires are denoted by the letter "B". Passenger car tires are generally radial tires. 4. 15: Rim diameter, which is the diameter of the wheel hub, usually measured in inches.
When I first picked up my car, I noticed that tire specifications are quite complex, commonly appearing in codes like 205/55R16. Here, 205 refers to the tire width of 205mm, 55 is the aspect ratio (the height-to-width ratio of the tire at 55%), R indicates radial construction design, and 16 is the rim diameter of 16 inches. Often followed by something like 91V, where 91 represents the load index with a maximum capacity of 615kg, and V is the speed rating with a top speed of 240km/h. Different vehicle models match different specifications: sedans typically use P195/65R15 (P stands for passenger car), while SUVs might use larger sizes like 225/60R18. There's a wide variety of brands and models: Michelin's Pilot Sport series is suitable for performance cars, Bridgestone's Ecopia is an economical and practical choice, and for winter, specialized winter tire models like Michelin's X-Ice are recommended. Choosing the wrong type can affect fuel efficiency and handling. Last time, I mistakenly used tires with a higher aspect ratio on rough roads, which led to premature wear. It's advisable to check the manual or look up compatible models online when buying a car and regularly inspect tire pressure to avoid accidents.
