355/25R21 in Inches

A 355/25R21 tire has a 28-inch diameter, a 14-inch width, and is designed for a 21-inch rim.

In high flotation terms, this tire is labeled as 28x14R21.

355/25R21 Tire Size
355/25R21 Tire Size in Inches
355/25R21 Tire Circumference
720.6 revs/mile

355/25R21 Tire Overview

28 inches
Wheel Diameter
21 inches
Tire Width
14 inches
87.9 inches
Sidewall Height
3.5 inches
720.6 per mile

What does 355/25R21 mean?

355/25R21 tire size meaning in inches

355/25R21 is a tire size with the following dimensions:

  • 355 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.
  • 25 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.
  • 21 is the diameter of the wheel in inches, on which the tire is to be mounted.

355/25R21 Tire Conversion

Tire Diameter28 in710.9 mm
Section Width14 in355 mm
Rim Height21 in533 mm
Sidewall Height3.5 in88.8 mm
Circumference87.9 in2233.4 mm
Revolutions720.6 revs/mile
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FAQ About 355/25R21 Tire

How tall is a 355/25R21 tire?

The height (or diameter) of a 355/25R21 tire is 28 inches

How wide is a 355/25R21 tire?

The width of a 355/25R21 tire is 355 mm, which is about 14 inches.

What size rim fits a 355/25R21 tire?

A 355/25R21 tire fits on a rim that is 21 inches in diameter.

What does the 25 in a 355/25R21 tire mean?

The 25 in a 355/25R21 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 25% of its width.

Alternative Tire Sizes for 355/25R21

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 355/25R21:

Tire SizeDiameterRim
255/35R2128.0″ (Equal)21 x 8.5-10.0
295/30R2128.0″ (Equal)21 x 10.0-11.0
235/35R2127.5″ (-1.8%)21 x n/a
245/35R2127.8″ (-0.7%)21 x 8.0-9.0
245/40R2128.7″ (2.5%)21 x 8.0-9.5
265/30R2127.3″ (-2.5%)21 x 9.0-10.0
265/35R2128.3″ (1.1%)21 x 9.0-10.5
275/30R2127.5″ (-1.8%)21 x 9.0-10.0
275/35R2128.6″ (2.1%)21 x 9.0-11.0
285/30R2127.7″ (-1.1%)21 x 9.5-10.5
305/30R2128.2″ (0.7%)21 x 10.5-11.5
315/30R2128.4″ (1.4%)21 x 10.5-11.5
325/25R2127.4″ (-2.1%)21 x 11.5-12.5
325/30R2128.7″ (2.5%)21 x 11.0-12.0