What does 18565r1588h on the tire mean?
2 Answers
185 indicates the tread width of the tire, measured in millimeters. 65 is the aspect ratio, which represents the ratio of the sidewall height to the tread width. R stands for Radial, indicating that the tire has a radial structure. 15 is the outer diameter of the wheel rim, measured in inches. 88 is the load rating, which varies according to different manufacturers' specifications. H denotes the speed rating of the tire, indicating a safe speed limit of up to 210 kilometers per hour. Tire maintenance tips: 1. Check tire pressure: Both underinflation and overinflation can cause abnormal tire wear, shorten the tire's lifespan, increase fuel consumption, and even raise the risk of a blowout. It is recommended to check tire pressure once a month to ensure it is at the correct level. 2. Pay attention to tire wear indicators: The wear indicators are located in the main tread grooves and appear as small rubber bars with a trapezoidal cross-section. When the tread wears down to the level of these indicators, the tire must be replaced. During the rainy season, to prevent the vehicle from slipping on wet roads, the tread depth should be maintained at least 3mm above the wear indicators.
The 18565R1588H on that tire is actually a standard specification code. I've been driving for over ten years and am used to reading these. 185 represents the tire width of 185 millimeters—the larger the number, the wider the tire; 65 is the aspect ratio, meaning the sidewall height is 65% of the width, which affects comfort and handling; R stands for radial construction, which most cars use nowadays; 15 is the rim diameter in inches, determining the wheel size; 88 is the load index, indicating each tire can bear a maximum of 560 kilograms; H is the speed rating, allowing a top speed of 210 km/h. When replacing tires, it's essential to ensure these parameters match the original specifications, or it could lead to instability or even safety issues. Regularly checking tire wear is also crucial—it reminds us to maintain them promptly to avoid breakdowns on the road.
