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Frequently Asked Questions
The 285/40R20 tire has a width of 29.0 inches. When the tire is not in use, we take the same measurement across its true center from the lowest to the highest point.
Here's how the number 285/40R20 approaches:
- Well, here is the wheel width in millimeters (285). Between the sidewalls, it measures how far apart they may be.
- In this scenario, 40 is the aspect ratio. The range indicates how tall the tire's cross-phase is about its width.
- Thirdly, the R is radial, which is what this letter stands for, indicating that the layers of cloth run in a circle throughout the tire.
- And, the number 20 means that the length of the wheel's rim is 20 inches.
