The LT275/65R20 tire has a diameter of 34.1 inches and an aspect ratio of 65. The aspect ratio represents the ratio of the tire’s sidewall height to its section width, expressed as a percentage. To calculate the tire height, we use the formula that considers the tire diameter and the aspect ratio. In this case, the tire’s height is approximately 465.27 millimeters.
Understanding the 275/65R20 Tire Size
The 275/65R20 tire size is often found on trucks, SUVs, and some commercial vehicles. Let’s dissect each component of this code to grasp its significance:
| Tire Size | Description |
|---|---|
| 275 | Represents the tire width in millimeters. In this case, the tire is 275 millimeters wide. |
| 65 | Denotes the aspect ratio, which is the height of the tire’s sidewall as a percentage of the width. For a 275/65 tire, the sidewall height is 65% of 275mm. |
| R20 | Indicates that the tire is designed to fit wheels with a 20-inch diameter. |
Calculating the Height
To determine the overall height of a 275/65R20 tire, we can use a simple formula:
Overall Height = (Tire Width Aspect Ratio) + (Wheel Diameter 25.4) (in millimeters)
Substituting the values for the 275/65R20 tire size into the formula:
Overall Height = (275 0.65) + (20 25.4)
Real-world Application
Knowing the actual height of a tire can be beneficial for various reasons. For instance, it helps in determining the appropriate tire size when upgrading to aftermarket wheels and ensuring the overall diameter closely matches the original equipment tires. Additionally, it aids in maintaining accurate speedometer readings and proper vehicle clearance.