255/50R20 in Inches

A 255/50R20 tire has a 30-inch diameter, a 10-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 30x10R20.

255/50R20 Tire Size
255/50R20 Tire Size in Inches
255/50R20 Tire Circumference
671.4 revs/mile

255/50R20 Tire Overview

30 inches
Wheel Diameter
20 inches
Tire Width
10 inches
94.4 inches
Sidewall Height
5 inches
671.4 per mile

What does 255/50R20 mean?

255/50R20 tire size meaning in inches

255/50R20 is a tire size with the following dimensions:

  • 255 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.

255/50R20 Tire Conversion

Tire Diameter30 in763 mm
Section Width10 in255 mm
Rim Height20 in508 mm
Sidewall Height5 in127.5 mm
Circumference94.4 in2397 mm
Revolutions671.4 revs/mile
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FAQ About 255/50R20 Tire

How tall is a 255/50R20 tire?

The height (or diameter) of a 255/50R20 tire is 30 inches

How wide is a 255/50R20 tire?

The width of a 255/50R20 tire is 255 mm, which is about 10 inches.

What size rim fits a 255/50R20 tire?

A 255/50R20 tire fits on a rim that is 20 inches in diameter.

What does the 50 in a 255/50R20 tire mean?

The 50 in a 255/50R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 50% of its width.

Alternative Tire Sizes for 255/50R20

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 255/50R20:

Tire SizeDiameterRim
145/80R2029.1″ (-3.0%)20 x n/a
235/50R2029.3″ (-2.3%)20 x 6.5-8.5
235/55R2030.2″ (0.7%)20 x 6.5-8.5
245/50R2029.6″ (-1.3%)20 x 7.0-8.5
265/45R2029.4″ (-2.0%)20 x 8.5-10.0
265/50R2030.4″ (1.3%)20 x 7.5-9.5
275/45R2029.7″ (-1.0%)20 x 8.5-10.5
275/50R2030.8″ (2.7%)20 x 7.5-9.5
285/45R2030.1″ (0.3%)20 x 9.0-10.5
295/40R2029.3″ (-2.3%)20 x 10.0-11.5
295/45R2030.5″ (1.7%)20 x 9.5-11.0
305/40R2029.6″ (-1.3%)20 x 10.0-12.0
305/45R2030.8″ (2.7%)20 x 9.5-11.5