What does 215/55r1794v mean?

2 Answers
GarrettDella
07/29/25 10:48pm
215 represents the tire width of 215 millimeters, 55 is the aspect ratio of 55%, R stands for radial tubeless tire, 17 is the rim diameter, and 94v corresponds to a load capacity of 670kg and a maximum speed of 240Km/h. Below are relevant introductions about tires: 1. Tire representation: Tire specifications are commonly represented by a set of numbers. The first number indicates the tire section width, and the latter indicates the rim diameter, in inches. For example, 165/70R14 means a tire width of 165 millimeters, an aspect ratio of 70, and a rim diameter of 14 inches. 2. Symbol meanings: The letters or symbols in the middle have special meanings: "X" indicates a high-pressure tire; "R" and "Z" indicate radial tires; "—" indicates bias-ply tires. For example, 6.00—12, a bias-ply tire, is only used in some low-end off-road vehicles and heavy-duty trucks due to its poor safety, load capacity, and high-speed stability.
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LeRowan
08/16/25 12:13am
As a long-time SUV owner, I frequently deal with tires, and 215/55R17 94V is actually a set of detailed tire specifications. 215 refers to the tire width in millimeters—wider tires offer better grip but slightly higher fuel consumption. 55 represents the aspect ratio, meaning the tire height is 55% of the width; a higher ratio provides more comfort but may feel softer during cornering. R stands for radial construction, the common design of modern tires. 17 is the rim size in inches—17-inch wheels look quite imposing. 94 indicates the load index, capable of carrying up to around 670 kg, which is crucial for fully loaded trips. V denotes the speed rating, with a maximum speed limit of 240 km/h—exceeding this can pose safety risks. When selecting tires, it’s important to match these numbers correctly to avoid compromising driving stability and fuel efficiency.
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