What does 185/60r15 mean?
1 Answers
185/60R15 specific meaning: 185 indicates the cross-sectional width in millimeters. 60 represents the aspect ratio, meaning the section height is 60% of the width, and 15 denotes the rim diameter in inches. More details about tires are as follows: 1. Types of tires: The internationally standard tire code expresses the section width and aspect ratio as a percentage in millimeters. This is followed by: tire type code, rim diameter (inches), load index (permissible load-bearing mass code), and permissible speed code. For example, in 175/70R1477H, 175 means the tire width is 175MM, 70 indicates the tire's section aspect ratio is 70%, meaning the section height is 70% of the width, the rim diameter is 14 inches, the load index is 77, and the speed rating is H. 2. Passenger cars generally use radial tires. The specifications of radial tires include width, aspect ratio, inner diameter, and speed limit symbol. It is particularly important to note the aspect ratio, which refers to the percentage of the tire's sidewall height to its width. Modern passenger car tires mostly have aspect ratios between 50 and 70. The smaller the number, the flatter the tire shape. To ensure sufficient load-bearing capacity and improve driving stability and grip, the width of tires and rims has to be continuously increased. As a result, the cross-sectional shape of tires has evolved from an approximate circle to a flattened ellipse. The lower the tire's aspect ratio, the smoother the tire runs and the stronger the handling. However, the ride may feel less elastic, with more noticeable vibrations. Some cars have already adopted tubeless radial tires, commonly known as 'atomic tires.' These tires are less prone to heat buildup during high-speed driving. If punctured by a nail or sharp object, they leak slowly, allowing the vehicle to continue driving for a certain distance.
