What does the 205/55r1691v tire mean?

2 Answers
VanRowan
07/29/25 7:35pm
205/55r1691v tire means the following: 1. Section width: 205 indicates that the tire's section width is 205 millimeters. 2. Aspect ratio: 55 is the percentage of the tire's section height divided by the tire's width. 3. Radial tire: R stands for radial tire, and 16 represents the rim diameter of 16 inches. 4. Load index: 91 corresponds to a load capacity of 615 KG, and V is the speed symbol. Below is some extended information about tires: 1. Tire specifications: Tire specifications are the marked data for tire parameters, performance, etc. Tire specifications are generally a set of numbers, with the first number indicating the tire section width and the latter number indicating the rim diameter, both in inches. The letters or symbols in between have special meanings: "x" indicates a high-pressure tire; "R", "Z" indicate radial tires; "-" indicates a low-pressure tire. 2. Tire rolling direction: The tread pattern on the tire is particularly crucial for drainage and anti-skid performance during driving, so off-road vehicle tires with asymmetric tread patterns often use arrow marks to indicate the assembly rolling direction to ensure the designed adhesion, anti-skid, and other performances. If installed incorrectly, it will have the opposite effect. 3. Tire production batch number: A set of numbers and letters are used to indicate the manufacturing date and quantity of the tire. For example, "98N08B5820" means the 5820th tire produced by group B in August 1998. The production batch number is used to identify the age and storage time of the tire. 4. Tire rim specifications: Indicate the rim specifications that match the tire. For practical use, such as "standard rim 5.00F".
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Patricia
08/14/25 2:43pm
Tire specification 205/55 R16 91V. I've been driving for decades, and the meaning is quite simple: 205 represents the tire width of 205 millimeters. The width affects grip and fuel consumption—too narrow and it's unstable, too wide and it's fuel-inefficient. 55 is the aspect ratio, meaning the height is 55% of the width. A smaller ratio offers more responsive handling but a bumpier ride, while a larger ratio provides comfort but softer cornering. R stands for radial construction, which is highly durable, and this is how modern tires are designed. 16 inches is the rim diameter, which must match a 16-inch wheel. Mismatched sizes can damage the suspension or brakes. 91 is the load index, indicating a maximum load capacity of around 615 kilograms, ensuring the tire won't burst when the vehicle is fully loaded. V is the speed rating, meaning a safe maximum speed of 240 kilometers per hour, suitable for high-speed driving. When selecting tires, always refer to the vehicle manual for strict compatibility to avoid safety risks from upgrades or downgrades. For daily maintenance, remember to check tire pressure and wear monthly to ensure driving safety. Such small details can prevent blowout accidents.
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