305/50R20 in Inches

A 305/50R20 tire has a 32-inch diameter, a 12-inch width, and is designed for a 20-inch rim.

In high flotation terms, this tire is labeled as 32x12R20.

305/50R20 Tire Size
12"
32"
305/50R20 Tire Size in Inches
305/50R20 Tire Circumference
100.6"
20"
6"
630.1 revs/mile

305/50R20 Tire Overview

Height
32 inches
Wheel Diameter
20 inches
Tire Width
12 inches
Circumference
100.6 inches
Sidewall Height
6 inches
Revolutions
630.1 per mile
Tirelib.com

What does 305/50R20 mean?

305/50R20 tire size meaning in inches

305/50R20 is a tire size with the following dimensions:

  • 305 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.

305/50R20 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter32 in813 mm
Section Width12 in305 mm
Rim Height20 in508 mm
Sidewall Height6 in152.5 mm
Circumference100.6 in2554.1 mm
Revolutions630.1 revs/mile
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FAQ About 305/50R20 Tire

How tall is a 305/50R20 tire?

The height (or diameter) of a 305/50R20 tire is 32 inches

How wide is a 305/50R20 tire?

The width of a 305/50R20 tire is 305 mm, which is about 12 inches.

What size rim fits a 305/50R20 tire?

A 305/50R20 tire fits on a rim that is 20 inches in diameter.

What does the 50 in a 305/50R20 tire mean?

The 50 in a 305/50R20 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 50% of its width.

Alternative Tire Sizes for 305/50R20

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 305/50R20:

Tire SizeDiameterRim
255/60R2032.0″ (Equal)20 x 7.0-9.0
235/60R2031.1″ (-2.8%)20 x 6.5-8.5
245/60R2031.6″ (-1.2%)20 x 7.0-8.5
265/55R2031.5″ (-1.6%)20 x n/a
265/60R2032.5″ (1.6%)20 x 7.5-9.5
275/55R2031.9″ (-0.3%)20 x 7.5-9.5
285/50R2031.2″ (-2.5%)20 x 8.0-10.0
285/55R2032.3″ (0.9%)20 x 8.0-10.0
295/50R2031.6″ (-1.2%)20 x 8.0-10.5
295/55R2032.8″ (2.5%)20 x 8.0-10.0
315/50R2032.4″ (1.2%)20 x 8.5-11.0
325/50R2032.8″ (2.5%)20 x 9.0-11.5