What does 315/70R20 mean?
315/70R20 is a tire size with the following dimensions:
- 315 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.
- 70 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.
315/70R20 Tire Conversion
| Dimensions | Inches | Millimeters |
| Tire Diameter | 37.4 in | 949 mm |
| Section Width | 12.4 in | 315 mm |
| Rim Height | 20 in | 508 mm |
| Sidewall Height | 8.7 in | 220.5 mm |
| Circumference | 117.4 in | 2981.4 mm |
| Revolutions | 539.8 revs/mile | |
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FAQ About 315/70R20 Tire
How tall is a 315/70R20 tire?
The height (or diameter) of a 315/70R20 tire is 37.4 inches
How wide is a 315/70R20 tire?
The width of a 315/70R20 tire is 315 mm, which is about 12.4 inches.
What size rim fits a 315/70R20 tire?
A 315/70R20 tire fits on a rim that is 20 inches in diameter.
What does the 70 in a 315/70R20 tire mean?
The 70 in a 315/70R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 70% of its width.
Alternative Tire Sizes for 315/70R20
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 315/70R20:
| Tire Size | Diameter | Rim |
|---|---|---|
| 355/60R20 | 36.8″ (-1.6%) | 20 x 8.0-9.5 |