315/50R20 in Inches

A 315/50R20 tire has a 32.4-inch diameter, a 12.4-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 32.4x12.4R20.

315/50R20 Tire Size
315/50R20 Tire Size in Inches
315/50R20 Tire Circumference
622.4 revs/mile

315/50R20 Tire Overview

32.4 inches
Wheel Diameter
20 inches
Tire Width
12.4 inches
101.8 inches
Sidewall Height
6.2 inches
622.4 per mile

What does 315/50R20 mean?

315/50R20 tire size meaning in inches

315/50R20 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.
  • 50 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.

315/50R20 Tire Conversion

Tire Diameter32.4 in823 mm
Section Width12.4 in315 mm
Rim Height20 in508 mm
Sidewall Height6.2 in157.5 mm
Circumference101.8 in2585.5 mm
Revolutions622.4 revs/mile
Not the tire size you are searching for? Try our Tire Size Calculator.

FAQ About 315/50R20 Tire

How tall is a 315/50R20 tire?

The height (or diameter) of a 315/50R20 tire is 32.4 inches

How wide is a 315/50R20 tire?

The width of a 315/50R20 tire is 315 mm, which is about 12.4 inches.

What size rim fits a 315/50R20 tire?

A 315/50R20 tire fits on a rim that is 20 inches in diameter.

What does the 50 in a 315/50R20 tire mean?

The 50 in a 315/50R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 50% of its width.

Alternative Tire Sizes for 315/50R20

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 315/50R20:

Tire SizeDiameterRim
245/60R2031.6″ (-2.5%)20 x 7.0-8.5
255/60R2032.0″ (-1.2%)20 x 7.0-9.0
265/55R2031.5″ (-2.8%)20 x n/a
265/60R2032.5″ (0.3%)20 x 7.5-9.5
275/55R2031.9″ (-1.5%)20 x 7.5-9.5
275/60R2033.0″ (1.9%)20 x 7.5-9.5
285/55R2032.3″ (-0.3%)20 x 8.0-10.0
295/50R2031.6″ (-2.5%)20 x 8.0-10.5
295/55R2032.8″ (1.2%)20 x 8.0-10.0
305/50R2032.0″ (-1.2%)20 x 8.5-11.0
305/55R2033.2″ (2.5%)20 x 8.5-10.0
325/50R2032.8″ (1.2%)20 x 9.0-11.5
375/45R2033.3″ (2.8%)20 x n/a