Understanding the information on a tyre's sidewall is essential for selecting the right tyre for your vehicle. The sidewall provides valuable details including the specifications, brand, and type of construction. These numbers and codes are standardized and recognized by tyre manufacturers globally.
Key Codes on a Tire's Sidewall
- Section Width (mm): This indicates the width of the tire in millimeters.
- Aspect Ratio: This is the ratio of the tire's section height to its section width, expressed as a percentage.
- Rim Diameter (in): The diameter of the wheel's rim, in inches, that the tire is designed to fit.
- Load Index: This number represents the maximum load-carrying capacity of the tire.
- Speed Rating: This letter denotes the maximum speed capability of the tire.
Load Index and Speed Rating
The load index and speed rating are essential for determining a tire's performance capabilities. The load index corresponds to the tire's load capacity, while the speed rating, designated by letters from J to Z, indicates the maximum speed at which the tire can safely operate. These two factors are interdependent, and it’s important to refer to the manufacturer's tables for precise values.
Load Index Table
| Load Index | Kilograms | Pounds |
|---|---|---|
| 75 | 387 | 853 |
| 76 | 400 | 882 |
| 77 | 412 | 908 |
| ... | ... | ... |
| 100 | 800 | 1764 |
Speed Rating Table
| Speed Rating | Max Speed (km/h) | Max Speed (mph) |
|---|---|---|
| J | 100 | 62 |
| K | 110 | 68 |
| L | 120 | 75 |
| ... | ... | ... |
| Z | 240+ | 149+ |
By understanding these codes and ratings, you can ensure that your tires are suitable for your vehicle’s specifications and driving conditions. Proper tire selection contributes to better performance, safety, and longevity of your tires.
.jpg "Symptoms of a Bad Ignition Relay: Troubleshooting and Replacement Guide")
0 comments: