355/50R20 Tire Size in Inches and Millimeters

355/50R20 tires have a diameter of 34" (864 mm), a tread width of 14" (355 mm), and a wheel diameter of 20" (508 mm).The sidewall of the tire is 7" (178 mm), and the tire's circumference is 106.8" (2713 mm). This means a 355/50R20 tire will make make 593 revolutions per mile, or 369 revolutions per kilometer.

355/50R20 Tire Front
14"
34"
355/50R20 Tire Side
Tire Circumference
106.8"
20"
7"
593 Revs/Mile
SpecInchesMetric
Diameter34"864 mm
Width14"355 mm
Wheel20"508 mm
Sidewall7"178 mm
Circum106.8"2713 mm
Revolutions593 per mile369 per km

What Does 355/50R20 Mean?

The tire size 355/50R20 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 355: This number represents the width of the tire in millimeters. In this case, the tire is 355 millimeters wide.
  • 50: This number represents the aspect ratio of the tire, which is the height of the tire's sidewall as a percentage of its width. In this case, the sidewall height is 50% of the tire's width.
  • R: This letter indicates the tire's construction type. “R” stands for radial construction, which is the most common type of tire construction today.
  • 20: This number represents the diameter of the wheel that the tire is designed to fit on, in inches. In this case, the tire is designed to fit on a 20-inch wheel.

355/50R20 tire size meaning

How To Convert 355/50R20 Into Inches

The 355/50R20 conversion is fairly simple. The first number in the tire size, 355, represents the width of the tire in millimeters. To convert this to inches, we divide 355 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 14 inches.

The second number in the tire size, 50, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 14 by 0.50, which gives us approximately 7 inches.

Finally, the last number in the tire size, 20, represents the diameter of the wheel rim in inches. Therefore, the tire size 355/50R20 can be expressed in inches as roughly 14 inches wide, 7 inches tall, and designed to fit a 20-inch wheel rim.

Frequently Asked Questions About 355/50R20 Tires

How tall is a 355/50R20 tire?

A 355/50R20 tire has an approximate height, also known as the overall diameter, of 34 inches (864 mm). This height can vary slightly depending on the brand and model of the tire, as well as the amount of air pressure in the tire.

How wide is a 355/50R20 tire?

A 355/50R20 tire has a width of approximately 14 inches (355 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “355”. It’s important to note that the actual width of the tire may vary slightly depending on the brand and model of the tire, and the width may also be affected by the amount of air pressure in the tire.

Alternate 355/50R20 Replacement Tire Sizes

Upsizing your wheels or tires? Replacement tires must be within 3% of the diametor of the original tire. The following sizes fall within that range - click on any size to see detailed info about that tire and wheel combination.

SizeDiameterWidthWheel
255/80R1733.1"840 mm17 mm
255/85R1633.1"840 mm16 mm
275/25R2833.4"849 mm28 mm
275/55R2233.9"861 mm22 mm
275/65R2034.1"866 mm20 mm
275/70R1833.2"843 mm18 mm
275/80R1734.3"872 mm17 mm
285/50R2233.3"845 mm22 mm
285/55R2234.4"873 mm22 mm
285/60R2033.5"850 mm20 mm
285/65R2034.6"878 mm20 mm
285/70R1833.7"857 mm18 mm
285/75R1733.9"860 mm17 mm
285/75R1834.8"885 mm18 mm
295/25R2833.8"859 mm28 mm
295/40R2433.3"846 mm24 mm
295/45R2434.5"876 mm24 mm
295/50R2233.7"855 mm22 mm
295/55R2234.8"883 mm22 mm
295/60R2033.9"862 mm20 mm
295/65R1833.1"841 mm18 mm
295/70R1733.3"846 mm17 mm
295/70R1834.3"871 mm18 mm
295/75R1633.4"848 mm16 mm
295/75R1734.4"874 mm17 mm
305/30R2633.2"844 mm26 mm
305/35R2634.4"874 mm26 mm
305/40R2433.6"854 mm24 mm
305/45R2434.8"884 mm24 mm
305/50R2234.1"865 mm22 mm
305/55R2033.2"844 mm20 mm
305/60R2034.4"874 mm20 mm
305/65R1833.6"853 mm18 mm
305/70R1733.9"860 mm17 mm
305/70R1834.8"885 mm18 mm
305/75R1634"864 mm16 mm
315/20R3035"888 mm30 mm
315/40R2534.9"887 mm25 mm
315/45R2233.2"843 mm22 mm
315/50R2234.4"875 mm22 mm
315/60R2034.9"886 mm20 mm
315/70R1633.4"848 mm16 mm
315/70R1734.4"874 mm17 mm
315/75R1634.6"878 mm16 mm
325/45R2233.5"851 mm22 mm
325/50R2234.8"885 mm22 mm
325/60R1833.3"847 mm18 mm
325/65R1834.6"879 mm18 mm
325/70R1735"888 mm17 mm
335/40R2434.6"878 mm24 mm
335/55R2034.5"876 mm20 mm
335/70R1634.5"876 mm16 mm
345/60R1834.3"871 mm18 mm
355/40R2233.2"843 mm22 mm
355/50R2034"864 mm20 mm
375/45R2033.3"846 mm20 mm
385/35R2434.6"880 mm24 mm