What does 225/45r1791w mean?

[IkerLynn]

It refers to tire specifications, where 91W indicates the load index and speed rating, 225 is the tire section width, 45 represents the aspect ratio, and 18 denotes the inner diameter size. 91 stands for the load index, and W is the speed rating. Below is relevant information about tires: 1. Tire Introduction: Tires are the only components of a car that come into contact with the ground. Some car owners only replace the tires on the drive wheels when changing tires. For example, some front-wheel-drive car owners may only replace the two front tires, while some rear-wheel-drive car owners may only replace the two rear tires. In fact, this practice is acceptable. 2. Tire Aging: Tires are made of rubber and will age over time. It is recommended that car owners replace their tires every four years, even if the mileage is low within those four years. This is because tires can also age when left unused for extended periods, so it's important to check the production date when purchasing new tires.

[AliyahFitz]

I see you're asking about tire specifications. The number 225 refers to the width of the tire, measured in millimeters. A 225mm width is relatively wide, providing a stable feel at high speeds and reducing the tendency to drift. The 45 is the aspect ratio, indicating that the sidewall height is 45% of the tire's width. This ratio offers a comfortable ride on regular roads with less bumpiness. R17 denotes the rim size, with 17-inch rims being suitable for most family sedans. The 91 is the load index, meaning the tire can support up to 615 kilograms—overloading can cause the tire to fail. The W stands for the speed rating, allowing a maximum speed of 270 km/h, but be cautious about speeding to avoid accidents. Overall, this specification works well for both city and highway driving, as long as it matches your vehicle—avoid switching to incompatible models.

[McAlivia]

As a driving enthusiast, the numbers 225/45R17 91W actually hold quite a bit of significance. 225 refers to the width, and wider tires generally offer better grip; 45 is the aspect ratio, with lower ratios providing sharper handling but slightly reduced comfort; R stands for radial construction, which is what most new tires use today; the 17-inch wheel size is ideal for sporty cars; the load index 91 corresponds to a maximum load capacity of 615kg, so don’t overload it when moving or hauling; the speed rating W means it can handle up to 270km/h—great for speed but always prioritize safety. When choosing tires, consider both the brand and road conditions—reliable options like Michelin or Bridgestone are solid choices. For maintenance, check tire pressure regularly and keep it around 2.5bar to extend tire life.

[VonElena]

These specifications are crucial for safety and performance. A 225 width affects braking distance; a 45 aspect ratio balances handling and comfort; R17 size must match the vehicle; a 91 load index prevents overloading and tire bursts; a W speed rating ensures stability at high speeds up to 270km/h. Ensure the tires are correctly matched to the car to avoid accidents.