What does 185/65r14 mean?

1 Answers
MacAriel
07/30/25 6:35am
185/65r14 refers to the specifications of a tire. 185 is the tire width, which is considered a narrow tire; 65 is the aspect ratio of the tire, with 65 being a relatively common aspect ratio; R14 indicates that the rim diameter is 14 inches. Below is relevant information about tires: 1. The tire model refers to the international standard tire code, usually located on the sidewall of the tire, indicating the section width and aspect ratio as a percentage, with the unit in mm. It includes the tire type, rim diameter (in inches), followed by the load index and maximum speed code. In 185/65r14, 185 represents the tire's cross-sectional width of 185mm; 65 stands for the tire's aspect ratio, which is the tire's cross-sectional height divided by the tire width as a percentage—the higher the value, the thicker the tire, resulting in lower maneuverability but increased comfort; R represents the tire type, radial tire, and 14 denotes the rim diameter of 14 inches. 2. Generally, ordinary cars should not use tires with an aspect ratio greater than 75%, while luxury cars and high-performance sports cars are recommended to use tires with an aspect ratio less than 60%; R is the abbreviation of the English word "radial," indicating that the tire has a radial structure. If the tire is marked, for example, as 6.00-12, it means it is not a radial tire but a bias-ply tire. This type of tire is rarely seen in cars. Due to its poor safety, load capacity, and high-speed stability, it can only be used in some low-end off-road vehicles and heavy trucks.
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