What does 325/75R20 mean?
325/75R20 is a tire size with the following dimensions:
- 325 is the width of the tire in millimeters. This number also indicates the appropriate width of the rim on which the tire should be mounted.
- 75 is the aspect ratio, which is the ratio of the tire's height to its width. This affects the tire's handling and ride comfort
- R indicates the tire's construction type, meaning it has a radial construction. This provides stability and precision to the tire.
- 20 is the diameter of the wheel in inches, on which the tire is to be mounted.
325/75R20 Tire Conversion
| Dimensions | Inches | Millimeters |
| Tire Diameter | 39.2 in | 995.5 mm |
| Section Width | 12.8 in | 325 mm |
| Rim Height | 20 in | 508 mm |
| Sidewall Height | 9.6 in | 243.8 mm |
| Circumference | 123.1 in | 3127.5 mm |
| Revolutions | 514.6 revs/mile | |
Not the tire size you are searching for? Try our Tire Size Calculator.
FAQ About 325/75R20 Tire
How tall is a 325/75R20 tire?
The height (or diameter) of a 325/75R20 tire is 39.2 inches
How wide is a 325/75R20 tire?
The width of a 325/75R20 tire is 325 mm, which is about 12.8 inches.
What size rim fits a 325/75R20 tire?
A 325/75R20 tire fits on a rim that is 20 inches in diameter.
What does the 75 in a 325/75R20 tire mean?
The 75 in a 325/75R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 75% of its width.
Alternative Tire Sizes for 325/75R20
Typically, it's recommended to choose a tire with a diameter (height) within 3% of the original equipment manufacturer (OEM) tire size.
However, keep in mind that this is a general guideline and not an absolute rule.
Here are some tire sizes that are compatible with the 325/75R20:
| Tire Size | Diameter | Rim |
|---|